Florida began creating counties much later than most eastern states; the Spanish and British governors found no need for sophisticated administrative divisions due to the sparse settlement of the colony. In 1821, following Spain's cession of East and West Florida to the United States two years earlier, Andrew Jackson assumed the governorship of the territory. He retained the division of Florida into eastern and western parts for administrative purposes, but he moved the dividing line to the Suwannee River from its earlier location along the Chattahoochee and Apalachicola Rivers. Jackson decreed that East Florida would be called St. Johns County and West Florida would be Escambia County. After 1821, county creations and boundary changes became the responsibility of the legislature.
Bradford, Brevard, and Orange Counties had different names when they were created, and Hernando County was renamed Benton County for six years. In addition, there was an attempt to change the name of Mosquito (now Orange) County to Leigh Read County. In 1842 the legislature passed a law changing the name of Mosquito County to Leigh Read, in honor of the former legislator who was murdered in 1841, the victim of a longstanding quarrel with the Alston family (Read had killed Augustus Alston in an 1839 duel after repeated challenges from Alston). Although the bill honoring Read passed the legislature, a clerk kept the bill from reaching the governor's desk, effectively killing it. While the change never officially took place, the name Leigh Read can be found in various documents, including a contemporary map, as well as in several acts passed by the 1842 Florida territorial legislature.
With one exception, Florida counties were fully organized at the time of creation and remained fully organized. Dade (now Miami-Dade) County, the lone exception, was created in 1836 with a temporary county seat at Indian Key, about halfway between Miami and Key West. However, the lack of population created problems from the start. In 1838 one correspondent reported that there were not enough men in the entire county to form a grand and petit jury. Dade's fortunes diminished further in 1840 when Indians led by Chekika raided Indian Key, killing several citizens and destroying much of the town. Monroe County began to take over Dade's duties; in 1851 when the legislature ordered the records and files of Dade County removed to Monroe, Dade ceased to exist as a fully organized county and was for all practical purposes attached to Monroe. No single piece of legislation re-established Dade to fully organized status. Rather, over a period of time, beginning in the late 1860s, the county government again began to function, first with the meeting of County Commissioners in September 1869, then with the appointment of a clerk of court and sheriff, and finally in 1872 with the re-establishment of judicial functions.
This digital atlas maps the boundaries of two proposed counties that the Florida legislature tried to create in the 1910s. The creation of Bloxham County, named for a former governor, was authorized by the state legislature 1 June 1915, after an eight-year effort. However, the creation of a new county required the approval of voters in those portions of Levy and Marion Counties that would compose Bloxham. Throughout the summer the proposal was hotly debated, and on 14 September 1915, the creation of the new county was voted down, 460 to 339. Following this defeat, no serious efforts were made to revive Bloxham County. In a second instance, the outcome was different. On 6 June 1913, the Florida legislature authorized the creation of Broward County from Dade County. Dade County voters in the affected area voted against the proposed county in a referendum. However, proponents of the new county did not give up, and two years later the legislature again passed an act authorizing the creation of Broward County. This Broward County covered more territory than the earlier attempt and included land in Palm Beach County, as well as Dade. This time the referendum passed at an election held 1 October 1915, and Broward County was organized.
The boundary between Hernando, Hillsborough and Polk Counties presented some especially difficult problems in the mid-1800s that cannot be definitively resolved. Beginning with Hernando's creation in 1843, part of its southern boundary with Hillsborough ran along the Hillsborough River in township 26 south, ranges 21 and 22 east. This part of the boundary was confirmed on 1 January 1847. On 19 February 1874 Polk was given all that part of Hillsborough County that lay in township 26 south so that Hernando and Polk now shared the boundary along the river in township 26 south, ranges 21 and 22 east. At some point between 1874 and 1883, Hernando acquired from Polk all of township 26 that lay south of the Hillsborough River, although there is no legislation to that effect, and research in other local sources has not identified the reason or source for this change. On 5 March 1883 legislators transferred three sections of the township from Hernando to Polk; they apparently understood that by that date all of township 26 south, range 22 east belonged to Hernando. The compiler has decided to use the date "by 1880" for the transfer of township 26 from Polk to Hernando based upon the rendering of the boundary on contemporary maps, especially the annual Rand McNally business atlases which showed a boundary change beginning with the 1880 edition.
Dates
The dating standard in this digital atlas is the legally effective date of the change, whether it is for the creation of a new county or for the alteration of lines between existing counties. As the nineteenth century progressed, legislators recognized the importance of preparing for the establishment of a new county organization or for the shift in a jurisdiction that accompanies boundary changes. Some laws, therefore, began to carry two dates: one marking the passage of the law and the other specifying when the line change or new county creation would go into effect. If the date of passage and effective date are different, the law gives both.
Florida counties created before 1858 all have the same passage and effective date. Beginning with the creation of New River (now Bradford) and Suwannee Counties, many (but not all) counties had different effective dates—in some cases, these dates were established in the creation act, and in other cases, they were dependent on the outcome of a referendum.
Suwannee and New River are the only counties for which a precise effective date is not known. Both counties were authorized in a single act approved 21 December 1858, but the creations were dependent on a referendum that was to be held after thirty days of public notice following passage of the act. Neither Bradford, Suwannee, nor the parent county, Columbia, have county commissioners' records from this period, and no record could be found at the State Archives or in local historical sources. The earliest possible date for the referendum would have been 20 January 1859, but because of the time lag in communications, it is more likely that the referendum would not have been held until February, hence the effective date "February 1859" used in this digital atlas.
Sources
Most county boundary changes in Florida are found in the session laws of Florida Territory and the state of Florida, which were published annually. However, some individuals began to compile and publish collections of territorial and state laws in the nineteenth century; some of these works were commissioned or at least sanctioned by the legislature, and are recognized and accepted as reliable and authoritative. In Florida, John P. Duval's Compilation of the Public Acts of the Legislative Council of the Territory of Florida Passed Prior to 1840 (1839) and Leslie A. Thompson's Manual or Digest of the Statute Law of the State of Florida, Including Law of the United States Relative to the Government of Florida (1847), proved helpful in reconstructing early county boundaries.
Collections of pertinent sections of county boundary laws are convenient but demand caution. There is a potential for error in transcription, as well as the possibility that valuable information (e.g., an effective date) may be lost in the editorial process of excerpting the selected passages. Such a compilation can be a marvelous convenience for the researcher, once it has been checked against the session laws and has been found reliable. There are compilations of county creations and changes for a number of states, many prepared by the Historical Records Survey in the 1930s and 1940s, but they vary greatly in content and in accuracy. It is virtually impossible to judge their reliability until much of the work has been replicated. These secondary sources, therefore, are useful chiefly as guides to the primary laws, proclamations, and decisions. Such a secondary source is available for Florida, although it is little known. The Florida Historical Records Survey researched and prepared a compilation of county boundary laws, but the 1937 typescript was never published. A photocopy of this work, "Record of Acts of the Legislative Council of the Territory of Florida and General Assembly of the State of Florida Relating to County Boundaries, 1821–1937" was acquired from the State Library of Florida and was used to ensure that the compilers' search of session laws was complete.
Although all works used to determine the courses of county boundary lines appear in the bibliography, several deserve special mention. Five volumes of the Territorial Papers of the United States, covering Florida from 1821–1845, were very important for identifying locations, people, and survey lines; Charles C. Royce's "Indian Land Cessions in the United States" (1899) helped determine the early boundaries of Alachua and Orange Counties and explained the re-surveys of the Indian boundary line. Local histories were helpful for identifying places and confirming referendum dates. Several place name compilations were also important: Places in the Sun: The History and Romance of Florida Place-Names, by Bertha E. Bloodworth and Alton C. Morris (1978); Howard Cline's Provisional Historical Gazeteer [sic], with Locational Notes on Florida Colonial Communities, 1700–1823, and 16 Maps, 3 Figures (1964. Reprint 1974); and Allen Morris's Florida Place Names (1974).
Maps
Historical maps are generally treated as secondary works, used to locate lost landmarks and names, but sometimes errors on old maps can benefit research. When a boundary description cannot be plotted on a modern base map or does not seem to make sense, the flaw may lie not in the description but in the geographic notions upon which it was based. If the errors on an old map accurately reflect accepted ideas and knowledge, however, mistaken they may have been, that map may be the key to the true meaning of contemporaneous boundary descriptions. Florida provides an excellent example of this. In the 1820s and 1830s, the southern interior of Florida was still largely unknown and unexplored. When Monroe County was created in 1823 the northern boundary was described as a line running east from Charlotte Harbor up the Charlotte River to Lake Macaco (now Lake Okeechobee). The problem is that no river runs from Lake Okeechobee to Charlotte Harbor. Given the swampy conditions and difficult terrain, it is not surprising that such a mistake was made. John Williams wrote of the area in 1837: "Macaco, or Charlotte River, is supposed to have its source in Myacco Lake [Lake Okeechobee], in the heart of the Peninsula. We have not been so fortunate as to find white man or Indian that had ever visited the lake or the river more than fifty or sixty miles above Charlotte Bay" (Territory of Florida…, 49). In fact, on a map Williams drew to accompany his book, he included a Macaco River but left out Lake Okeechobee. I. G. Searcy's 1829 map of Florida shows Charlotte River running from Lake Okeechobee to Charlotte Harbor, although the lake is placed southwest of its actual location. In this case, the early, erroneous maps are essential to understanding the information available to legislators, and a line can be drawn to approximate the intended boundary.
The historical maps most frequently consulted for roads, rivers, lakes, and other locations were I. G. Searcy's Map of Florida Constructed Principally from Authentic Documents in the Land Office at Tallahassee (1829); the maps accompanying John Williams's two books, Territory of Florida… (1837) and View of West Florida… (1827); U. S. Engineer Department, Map of the Seat of War in Florida… (1839); J. Goldsborough Bruff, State of Florida, Compiled in the Bureau of Topographical Engineers from the Best Authorities (1846); and Atlas of Florida… (1926. Reprint 1980).
| Name or County | Start Date | End Date | Creation or Change | Citation | Sort Start Date | Sort End Date |
|---|---|---|---|---|---|---|
| 08 Sep 1565 | The Spanish founded the city of St. Augustine, the first permanent Spanish settlement in present Florida. The Spanish had incorporated Florida into their empire in the early sixteenth century, when Europeans first visited its coast. | (Tebeau, 19-34) | 15650908 | |||
| 31 Dec 1719 | In 1719, the French commander at New Orleans and the Spanish commander at Pensacola agreed to recognize the Perdido River as the boundary between their jurisdictions, French Louisiana and Spanish Florida, and their home governments acquiesced in the arrangement. | (Cox, 8) | 17191231 | |||
| 10 Feb 1763 | The Treaty of Paris, ending the Seven Years' War between Great Britain (the victor) and France and Spain, formally transferred Florida from Spain to Britain. The northern and western limits of Florida had not been fixed definitively but certainly lay at least as far north as the present state line and possibly as far west as the Mississippi River. | (Cappon, Petchenik, and Long, 1) | 17630210 | |||
| British East Florida | 07 Oct 1763 | 02 Sep 1783 | By royal proclamation King George III organized former Spanish Florida into the new British colonies of East Florida and West Florida. East Florida encompassed the territory east of the Apalachicola River and south of a straight line from where the Apalachicola is formed by the junction of the Chattahoochee and Flint Rivers to the headspring of the St. Marys River and thence down the St. Marys to the Atlantic Ocean. Demarcation of this boundary line and agreement on its details by Florida and Georgia was not achieved until the 1860s. | (Cappon, Petchenik, and Long, 1, 77; Shortt and Doughty, 119-120; Van Zandt, 103) | 17631007 | 17830902 |
| British West Florida | 07 Oct 1763 | 30 Jul 1764 | By royal proclamation King George III organized former Spanish Florida into the new British colonies of East Florida and West Florida. West Florida was to be bounded on the east by the Chattahoochee and Apalachicola Rivers, on the north by the parallel of 31 degrees north latitude, and on the west by the Mississippi River, the Iberville River, and Lake Pontchartrain, including parts of present Louisiana, Mississippi, Alabama, and Florida. | (Cappon, Petchenik, and Long, 1, 77; Shortt and Doughty, 119-120; Van Zandt, 103) | 17631007 | 17640730 |
| British West Florida | 31 Jul 1764 | 02 Sep 1783 | In July 1764, as part of the commission to West Florida's first governor, Great Britain redefined West Florida, extending its limits northward to a line running due east from the junction of the Yazoo and Mississippi Rivers to the Chattahoochee River. This implicitly reduced the western extent of Georgia and added Natchez and much of present Alabama and Mississippi to West Florida. | (Cappon, Petchenik, and Long, 87) | 17640731 | 17830902 |
| 08 May 1781 | Spain captured Pensacola, successfully concluding a campaign (started in August 1779) to conquer West Florida from Great Britain during the War of the American Revolution. | (Cappon, Petchenik, and Long, 53-54) | 17810508 | |||
| Spanish West Florida | 03 Sep 1783 | 14 Apr 1813 | Commissioners from Great Britain and the United States signed the Treaty of Paris (ratifications exchanged 12 May 1784), ending the War of the American Revolution, recognizing American independence, and defining U.S. boundaries. The U.S. was bounded on the west by the Mississippi River and on the south by the Floridas. Great Britain ceded East and West Florida to Spain by a separate Treaty of Paris but the boundaries of the Floridas (e.g., the 31st parallel of northern latitude) were not specified. | (Parry, 48:481, 487, 491-492; Van Zandt, 12) | 17830903 | 18130414 |
| Spanish East Florida | 03 Sep 1783 | 21 Feb 1819 | Commissioners from Great Britain and the United States signed the Treaty of Paris (ratifications exchanged 12 May 1784), ending the War of the American Revolution, recognizing American independence, and defining U.S. boundaries. The U.S. was bounded on the west by the Mississippi River and on the south by the Floridas. Great Britain ceded East and West Florida to Spain by a separate Treaty of Paris but the boundaries of the Floridas (e.g., the 31st parallel of northern latitude) were not specified. | (Parry, 48:481, 487, 491-492; Van Zandt, 12) | 17830903 | 18190221 |
| British East Florida | 03 Sep 1783 | Great Britain ceded East and West Florida to Spain by a separate Treaty of Paris following the end of the American Revolution. | (Parry, 48:481, 487, 491-492; Van Zandt, 12) | 17830903 | ||
| British West Florida | 03 Sep 1783 | Great Britain ceded East and West Florida to Spain by a separate Treaty of Paris following the end of the American Revolution. | (Parry, 48:481, 487, 491-492; Van Zandt, 12) | 17830903 | ||
| 29 Jul 1784 | Spain claimed most of the southwestern United States (north of West Florida, east of the Mississippi River, south of the Tennessee and Hiwassee Rivers, and west of the Flint River) based upon its conquest of West Florida and the lower Mississippi during the War of the American Revolution. The United States insisted upon the parallel of 31 degrees north latitude, specified in its 1783 peace treaty with Great Britain, as its southern boundary. Neither side actually controlled the interior. | (Cappon, Petchenik, and Long, 14, 74, 87; Whitaker, facing 68, 69) | 17840729 | |||
| 27 Oct 1795 | Pinckney's Treaty with Spain (ratified 25 April 1796) settled the U.S.-Florida boundary along the parallel of 31 degrees north latitude from the Mississippi River eastward to the Chattahoochee River, downstream to the mouth of the Flint River, eastward on a straight line to the head of the St. Marys River, and downstream to the Atlantic Ocean. | (Parry, 53:9, 12-13; Van Zandt, 22) | 17951027 | |||
| 30 Apr 1803 | The United States purchased Louisiana from France, taking formal possession 20 December 1803; boundaries were not clearly defined but unquestionably included the western half of the Mississippi drainage basin. | (Cox, facing 2, 80-101; Parry, 57:27, 30-31) | 18030430 | |||
| Disputed Area | 26 Mar 1804 | 14 Apr 1813 | The United States claimed the area south of 31 degrees north latitude between the Mississippi and Perdido Rivers (parts of present Louisiana, Mississippi, and Alabama) based on its purchase of Louisiana. The United States and Spanish West Florida both claimed the area, but Spain actually governed it. | (U.S. Stat, vol. 2, ch. 38 [1804], sec. 1/p. 283; Van Zandt, 107) | 18040326 | 18130414 |
| 07 Dec 1810 | Orleans Territory created FELICIANA County (Orleans Territory, extinct) from non-county area; included part of West Florida west of the Perdido River (parts of present Louisiana, Mississippi, and Alabama) claimed by the United States as part of Louisiana but actually controlled by Spain [not mapped]. | (Orleans Terr. Acts 1811, 2d sess., p. 210) | 18101207 | |||
| 30 Apr 1812 | The state of Louisiana was admitted to the Union from Orleans Territory; Louisiana included the area south of 31 degrees north latitude between the Mississippi and Pearl Rivers, which was also claimed by Spain as part of West Florida. | (Van Zandt, 106-108) | 18120430 | |||
| 14 May 1812 | Following admission into the Union of the state of Louisiana from Orleans Territory (30 April 1812), the United States formally added to Mississippi Territory the remnant of Orleans Territory lying south of 31 degrees north latitude and between the Pearl and Perdido Rivers (i.e., the southern portions of present Alabama and Mississippi) that the United States claimed as part of Louisiana but actually was controlled by Spain as part of West Florida. | (Fuller, 199; U.S. Stat., vol. 2, ch. 84 [1812]/p. 734; Van Zandt, 105) | 18120514 | |||
| Spanish West Florida | 15 Apr 1813 | 21 Feb 1819 | American forces captured the city of Mobile from Spain, effectively extending United States control over the territory between the Mississippi and Perdido Rivers (parts of present Louisiana, Mississippi, and Alabama); Spanish control and claims to the area effectively ended. | (Cox, facing 2; Fuller, 202) | 18130415 | 18190221 |
| Disputed Area | 15 Apr 1813 | American forces captured the city of Mobile from Spain, effectively extending United States control over the territory between the Mississippi and Perdido Rivers, previously claimed by the United States as part of Louisiana. | (Cox, facing 2; Fuller, 202) | 18130415 | ||
| Spanish West Florida | 22 Feb 1819 | 20 Jul 1821 | Spain ceded East Florida and West Florida (i.e., all territory east of the Perdido River) to the United States. Exchange of ratifications was delayed until 21 February 1821; American forces formally took possession of West Florida on 17 July 1821 and East Florida on 10 July 1821. | (Fuller, 307, 323; Parry, 70:1-7; Swindler, 2:309; Van Zandt, 27) | 18190222 | 18210720 |
| Spanish East Florida | 22 Feb 1819 | 20 Jul 1821 | Spain ceded East Florida and West Florida (i.e., all territory east of the Perdido River) to the United States. Exchange of ratifications was delayed until 21 February 1821; American forces formally took possession of East Florida at St. Augustine on 10 July 1821 and West Florida on 17 July 1821. | (Fuller, 307, 323; Parry, 70:1-7; Swindler, 2:309; Van Zandt, 27) | 18190222 | 18210720 |
| ST. JOHNS | 21 Jul 1821 | 11 Aug 1822 | ST. JOHNS created from non-county area by decree of Provisional Governor Andrew Jackson, who had been appointed by President Monroe on 10 March 1821 to exercise authority over Florida until the establishment of the territorial government. | (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. xx; Terr. Papers U.S., 22:8-10) | 18210721 | 18220811 |
| ESCAMBIA | 21 Jul 1821 | 11 Aug 1822 | ESCAMBIA created from non-county area by decree of Provisional Governor Andrew Jackson, who had been appointed by President Monroe on 10 March 1821 to exercise authority over Florida until the establishment of the territorial government. | (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. xx; Terr. Papers U.S., 22:8-10) | 18210721 | 18220811 |
| 30 Mar 1822 | The Territory of Florida was created from the provinces of East and West Florida ceded by Spain to the United States. The territory had the same boundaries as the present state of Florida. | (Terr. Papers U.S., 22:389-399; U.S. Stat., vol. 3, ch. 13 [1822], sec. 1/p. 654) | 18220330 | |||
| ST. JOHNS | 12 Aug 1822 | 23 Jun 1823 | ST. JOHNS lost to creation of DUVAL. | (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3) | 18220812 | 18230623 |
| DUVAL | 12 Aug 1822 | 23 Jun 1823 | DUVAL created by Florida Territory from ST. JOHNS. | (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3) | 18220812 | 18230623 |
| JACKSON | 12 Aug 1822 | 23 Jun 1823 | JACKSON created by Florida Territory from ESCAMBIA. | (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3) | 18220812 | 18230623 |
| ESCAMBIA | 12 Aug 1822 | 28 Dec 1824 | ESCAMBIA lost to creation of JACKSON. | (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3) | 18220812 | 18241228 |
| ST. JOHNS | 24 Jun 1823 | 02 Jul 1823 | ST. JOHNS exchanged with DUVAL. | (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8) | 18230624 | 18230702 |
| DUVAL | 24 Jun 1823 | 28 Dec 1824 | DUVAL gained from JACKSON, exchanged with ST. JOHNS. | (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8) | 18230624 | 18241228 |
| JACKSON | 24 Jun 1823 | 28 Dec 1824 | JACKSON lost to DUVAL and lost to creation of GADSDEN. | (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8) | 18230624 | 18241228 |
| GADSDEN | 24 Jun 1823 | 28 Dec 1824 | GADSDEN created by Florida Territory from JACKSON. | (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8) | 18230624 | 18241228 |
| ST. JOHNS | 03 Jul 1823 | 28 Dec 1824 | ST. JOHNS lost to creation of MONROE. | (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 122) | 18230703 | 18241228 |
| MONROE | 03 Jul 1823 | 03 Feb 1836 | MONROE created by Florida Territory from ST. JOHNS. | (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 122) | 18230703 | 18360203 |
| ALACHUA | 29 Dec 1824 | 18 Jan 1828 | ALACHUA created by Florida Territory from DUVAL and ST. JOHNS. | (Fla. Terr. Acts 1824, 3d sess., sec. 6/p. 261) | 18241229 | 18280118 |
| MOSQUITO | 29 Dec 1824 | 18 Jan 1828 | MOSQUITO (now ORANGE) created by Florida Territory from ST. JOHNS. | (Fla. Terr. Acts 1824, 3d sess., sec. 10/p. 262) | 18241229 | 18280118 |
| GADSDEN | 29 Dec 1824 | 07 Feb 1832 | GADSDEN lost to creation of LEON. | (Fla. Terr. Acts 1824, 3d sess., sec. 5/p. 261) | 18241229 | 18320207 |
| ST. JOHNS | 29 Dec 1824 | 13 Mar 1844 | ST. JOHNS lost to DUVAL and lost to creation of ALACHUA and MOSQUITO (now ORANGE); part of ST. JOHNS reverted to Indian Lands (non-county area). | (Fla. Terr. Acts 1824, 3d sess., secs. 6, 10/pp. 261-262) | 18241229 | 18440313 |
| LEON | 29 Dec 1824 | 19 Jan 1827 | LEON created by Florida Territory from DUVAL and GADSDEN. | (Fla. Terr. Acts 1824, 3d sess., sec. 5/p. 261) | 18241229 | 18270119 |
| WALTON | 29 Dec 1824 | 08 Dec 1825 | WALTON created by Florida Territory from ESCAMBIA and JACKSON. | (Fla. Terr. Acts 1824, 3d sess., sec. 2/p. 260) | 18241229 | 18251208 |
| DUVAL | 29 Dec 1824 | 29 Dec 1826 | DUVAL gained from ST. JOHNS, lost to creation of ALACHUA, LEON, and NASSAU. | (Fla. Terr. Acts 1824, 3d sess., sec. 8/p. 262) | 18241229 | 18261229 |
| NASSAU | 29 Dec 1824 | 29 Dec 1826 | NASSAU created by Florida Territory from DUVAL. | (Fla. Terr. Acts 1824, 3d sess., sec. 8/p. 262) | 18241229 | 18261229 |
| JACKSON | 29 Dec 1824 | 08 Dec 1825 | JACKSON gained from ESCAMBIA, lost to creation of WALTON. | (Fla. Terr. Acts 1824, 3d sess., secs. 2, 7, 9/pp. 260-262) | 18241229 | 18251208 |
| ESCAMBIA | 29 Dec 1824 | 08 Dec 1825 | ESCAMBIA lost to JACKSON and to creation of WALTON. | (Fla. Terr. Acts 1824, 3d sess., secs. 2, 7, 9/pp. 260-262) | 18241229 | 18251208 |
| Indian Lands | 29 Dec 1824 | 18 Jan 1828 | Part of ST. JOHNS reverted to non-county area (Indian Lands). | (Fla. Terr. Acts 1824, 3d sess., secs. 6, 10/pp. 261-262) | 18241229 | 18280118 |
| JACKSON | 09 Dec 1825 | 11 Jan 1827 | JACKSON exchanged with WALTON, lost to creation of WASHINGTON. | (Fla. Terr. Acts 1825, 4th sess., p. 35) | 18251209 | 18270111 |
| ESCAMBIA | 09 Dec 1825 | 17 Feb 1842 | ESCAMBIA lost to WALTON. | (Fla. Terr. Acts 1825, 4th sess., p. 35) | 18251209 | 18420217 |
| WASHINGTON | 09 Dec 1825 | 11 Jan 1827 | WASHINGTON created by Florida Territory from JACKSON and WALTON. | (Fla. Terr. Acts 1825, 4th sess., p. 35) | 18251209 | 18270111 |
| WALTON | 09 Dec 1825 | 07 Jan 1848 | WALTON gained from ESCAMBIA, exchanged with JACKSON, lost to creation of WASHINGTON. | (Fla. Terr. Acts 1825, 4th sess., p. 35) | 18251209 | 18480107 |
| NASSAU | 30 Dec 1826 | 01 Jan 1857 | NASSAU gained from DUVAL. | (Fla. Terr. Acts 1826, 5th sess., p. 158) | 18261230 | 18570101 |
| DUVAL | 30 Dec 1826 | 22 Nov 1828 | DUVAL lost to NASSAU. | (Fla. Terr. Acts 1826, 5th sess., p. 158) | 18261230 | 18281122 |
| WASHINGTON | 12 Jan 1827 | 28 Oct 1828 | WASHINGTON exchanged with JACKSON. | (Fla. Terr. Acts 1826, 5th sess., p. 108) | 18270112 | 18281028 |
| JACKSON | 12 Jan 1827 | 28 Oct 1828 | JACKSON exchanged with WASHINGTON. | (Fla. Terr. Acts 1826, 5th sess., p. 108) | 18270112 | 18281028 |
| JEFFERSON | 20 Jan 1827 | 25 Dec 1827 | JEFFERSON created by Florida Territory from LEON. | (Fla. Terr. Acts 1826, 5th sess., p. 151) | 18270120 | 18271225 |
| LEON | 20 Jan 1827 | 18 Jan 1828 | LEON lost to creation of JEFFERSON. | (Fla. Terr. Acts 1826, 5th sess., p. 151) | 18270120 | 18280118 |
| MADISON | 26 Dec 1827 | 08 Feb 1833 | MADISON created by Florida Territory from JEFFERSON. | (Fla. Terr. Acts 1827, 6th sess., p. 8) | 18271226 | 18330208 |
| JEFFERSON | 26 Dec 1827 | 18 Jan 1828 | JEFFERSON lost to creation of HAMILTON and MADISON. | (Fla. Terr. Acts 1827, 6th sess., p. 8) | 18271226 | 18280118 |
| HAMILTON | 26 Dec 1827 | 2000-12-31 00:00:00 | HAMILTON created by Florida Territory from JEFFERSON. | (Fla. Terr. Acts 1827, 6th sess., p. 8) | 18271226 | 20001231 |
| JEFFERSON | 19 Jan 1828 | 13 Nov 1829 | JEFFERSON lost to LEON. | (Fla. Terr. Acts 1827, 6th sess., p. 170) | 18280119 | 18291113 |
| LEON | 19 Jan 1828 | 13 Nov 1829 | LEON gained from JEFFERSON. | (Fla. Terr. Acts 1827, 6th sess., p. 170) | 18280119 | 18291113 |
| ALACHUA | 19 Jan 1828 | 03 Feb 1832 | ALACHUA lost to Indian lands (non-county area) when the treaty line was resurveyed. | (Fla. Terr. Acts 1827, 6th sess., p. 171; Royce, 704-705, pl. 121) | 18280119 | 18320203 |
| MOSQUITO | 19 Jan 1828 | 13 Mar 1844 | MOSQUITO (now ORANGE) lost to Indian lands (non-county area) when the treaty line was resurveyed. | (Fla. Terr. Acts 1827, 6th sess., p. 171; Royce, 704-705, pl. 121) | 18280119 | 18440313 |
| Indian Lands | 19 Jan 1828 | 24 Jan 1834 | Indian lands (non-county area) gained from ALACHUA and MOSQUITO (now ORANGE) when the treaty line was resurveyed. | (Fla. Terr. Acts 1827, 6th sess., p. 171; Royce, 704-705, pl. 121) | 18280119 | 18340124 |
| WASHINGTON | 29 Oct 1828 | 07 Feb 1832 | WASHINGTON exchanged with JACKSON. | (Fla. Terr. Acts 1828, 7th sess., p. 6) | 18281029 | 18320207 |
| JACKSON | 29 Oct 1828 | 08 Feb 1832 | JACKSON exchanged with WASHINGTON. | (Fla. Terr. Acts 1828, 7th sess., p. 6) | 18281029 | 18320208 |
| NASSAU | 23 Nov 1828 | An overlap resulted when a single area was assigned to both NASSAU and DUVAL [corrected 2 January 1857]. | (Fla. Terr. Acts 1828, 7th sess., secs. 5-6/pp. 220-221) | 18281123 | ||
| DUVAL | 23 Nov 1828 | 14 Mar 1844 | When all county boundaries in Florida Territory were redefined, DUVAL gained an area that was also assigned to NASSAU; an overlap resulted [corrected 2 January 1857]. | (Fla. Terr. Acts 1828, 7th sess., secs. 5-6/pp. 220-221) | 18281123 | 18440314 |
| Overlap Area | 23 Nov 1828 | 01 Jan 1857 | All county boundaries in Florida Territory were redefined. An overlap resulted when DUVAL was authorized to gain an area also claimed by NASSAU [corrected 2 January 1857]. | (Fla. Terr. Acts 1828, 7th sess., secs. 5-6/pp. 220-221) | 18281123 | 18570101 |
| JEFFERSON | 14 Nov 1829 | 12 Feb 1831 | JEFFERSON gained from LEON. | (Fla. Terr. Acts 1829, 8th sess., p. 37) | 18291114 | 18310212 |
| LEON | 14 Nov 1829 | 12 Feb 1831 | LEON lost to JEFFERSON. | (Fla. Terr. Acts 1829, 8th sess., p. 37) | 18291114 | 18310212 |
| JEFFERSON | 13 Feb 1831 | 29 Jan 1832 | JEFFERSON lost to LEON. | (Fla. Terr. Acts 1831, 9th sess., p. 31) | 18310213 | 18320129 |
| LEON | 13 Feb 1831 | 29 Jan 1832 | LEON gained from JEFFERSON. | (Fla. Terr. Acts 1831, 9th sess., p. 31) | 18310213 | 18320129 |
| JEFFERSON | 30 Jan 1832 | 08 Feb 1833 | JEFFERSON gained from LEON. | (Fla. Terr. Acts 1832, 10th sess., no. 11/p. 10) | 18320130 | 18330208 |
| LEON | 30 Jan 1832 | 10 Mar 1843 | LEON lost to JEFFERSON. | (Fla. Terr. Acts 1832, 10th sess., no. 11/p. 10) | 18320130 | 18430310 |
| ALACHUA | 04 Feb 1832 | 24 Jan 1834 | ALACHUA lost to creation of COLUMBIA. | (Fla. Terr. Acts 1832, 10th sess., no. 25, sec. 1/p. 33) | 18320204 | 18340124 |
| COLUMBIA | 04 Feb 1832 | 09 Feb 1835 | COLUMBIA created by Florida Territory from ALACHUA. | (Fla. Terr. Acts 1832, 10th sess., no. 25, sec. 1/p. 33) | 18320204 | 18350209 |
| WASHINGTON | 08 Feb 1832 | 10 Feb 1832 | WASHINGTON lost to creation of FRANKLIN. | (Fla. Terr. Acts 1832, 10th sess., no. 42/p. 44) | 18320208 | 18320210 |
| FRANKLIN | 08 Feb 1832 | 25 Jan 1838 | FRANKLIN created by Florida Territory from GADSDEN and WASHINGTON. | (Fla. Terr. Acts 1832, 10th sess., no. 42/p. 44) | 18320208 | 18380125 |
| GADSDEN | 08 Feb 1832 | 12 Jan 1851 | GADSDEN lost to creation of FRANKLIN. | (Fla. Terr. Acts 1832, 10th sess., no. 42/p. 44) | 18320208 | 18510112 |
| JACKSON | 09 Feb 1832 | 10 Feb 1832 | JACKSON lost to creation of FAYETTE (extinct). | (Fla. Terr. Acts 1832, 10th sess., no. 53/p. 58) | 18320209 | 18320210 |
| FAYETTE (extinct) | 09 Feb 1832 | 15 Feb 1833 | FAYETTE (extinct) created by Florida Territory from JACKSON. | (Fla. Terr. Acts 1832, 10th sess., no. 53/p. 58) | 18320209 | 18330215 |
| WASHINGTON | 11 Feb 1832 | 15 Feb 1833 | WASHINGTON exchanged with JACKSON. | (Fla. Terr. Acts 1832, 10th sess., no. 72/p. 113) | 18320211 | 18330215 |
| JACKSON | 11 Feb 1832 | 15 Feb 1833 | JACKSON exchanged with WASHINGTON. | (Fla. Terr. Acts 1832, 10th sess., no. 72/p. 113) | 18320211 | 18330215 |
| MADISON | 09 Feb 1833 | 21 Feb 1843 | MADISON gained from JEFFERSON. | (Fla. Terr. Acts 1833, 11th sess., ch. 686/p. 52) | 18330209 | 18430221 |
| JEFFERSON | 09 Feb 1833 | 21 Feb 1843 | JEFFERSON lost to MADISON. | (Fla. Terr. Acts 1833, 11th sess., ch. 686/p. 52) | 18330209 | 18430221 |
| WASHINGTON | 16 Feb 1833 | 25 Jan 1838 | WASHINGTON lost to FAYETTE (extinct) and JACKSON. | (Fla. Terr. Acts 1833, 11th sess., chs. 687-688/pp. 52-53) | 18330216 | 18380125 |
| JACKSON | 16 Feb 1833 | 31 Jan 1834 | JACKSON gained from FAYETTE (extinct) and WASHINGTON. | (Fla. Terr. Acts 1833, 11th sess., chs. 687-688/pp. 52-53) | 18330216 | 18340131 |
| FAYETTE (extinct) | 16 Feb 1833 | 31 Jan 1834 | FAYETTE (extinct) gained from WASHINGTON, lost to JACKSON. | (Fla. Terr. Acts 1833, 11th sess., ch. 688/p. 53) | 18330216 | 18340131 |
| HILLSBOROUGH | 25 Jan 1834 | 23 Feb 1843 | HILLSBOROUGH created by Florida Territory from ALACHUA and former Indian lands (non-county area). | (Fla. Terr. Acts 1834, 12th sess., ch. 764/p. 46) | 18340125 | 18430223 |
| ALACHUA | 25 Jan 1834 | 09 Feb 1835 | ALACHUA lost to creation of HILLSBOROUGH. | (Fla. Terr. Acts 1834, 12th sess., ch. 764/p. 46) | 18340125 | 18350209 |
| Indian Lands | 25 Jan 1834 | Indian lands lost all territory to creation of HILLSBOROUGH; eliminated all non-county Indian land in Florida Territory. | (Fla. Terr. Acts 1834, 12th sess., ch. 764/p. 46) | 18340125 | ||
| JACKSON | 01 Feb 1834 | 25 Jan 1838 | JACKSON gained all of FAYETTE; FAYETTE eliminated. | (Fla. Terr. Acts 1834, 12th sess., ch. 765/p. 47) | 18340201 | 18380125 |
| FAYETTE (extinct) | 01 Feb 1834 | FAYETTE lost all territory to JACKSON; FAYETTE eliminated. | (Fla. Terr. Acts 1834, 12th sess., ch. 765/p. 47) | 18340201 | ||
| ALACHUA | 10 Feb 1835 | 23 Feb 1843 | ALACHUA gained from COLUMBIA. | (Fla. Terr. Acts 1835, 13th sess., ch. 869/p. 325) | 18350210 | 18430223 |
| COLUMBIA | 10 Feb 1835 | 14 Mar 1844 | COLUMBIA lost to ALACHUA. | (Fla. Terr. Acts 1835, 13th sess., ch. 869/p. 325) | 18350210 | 18440314 |
| DADE | 04 Feb 1836 | 07 Dec 1866 | DADE (now MIAMI-DADE) created by Florida Territory from MONROE. | (Fla. Terr. Acts 1836, 14th sess., ch. 937/p. 19) | 18360204 | 18661207 |
| MONROE | 04 Feb 1836 | 12 Jan 1859 | MONROE lost to creation of DADE (now MIAMI-DADE). | (Fla. Terr. Acts 1836, 14th sess., ch. 937/p. 19) | 18360204 | 18590112 |
| WASHINGTON | 26 Jan 1838 | 24 Feb 1840 | WASHINGTON apparently gained small area from FRANKLIN, lost to creation of CALHOUN. | (Fla. Terr. Acts 1838, 16th sess., no. 8, sec. 1/p. 9) | 18380126 | 18400224 |
| JACKSON | 26 Jan 1838 | 09 Mar 1845 | JACKSON lost to creation of CALHOUN. | (Fla. Terr. Acts 1838, 16th sess., no. 8, sec. 1/p. 9) | 18380126 | 18450309 |
| CALHOUN | 26 Jan 1838 | 24 Feb 1840 | CALHOUN created by Florida Territory from FRANKLIN, JACKSON, and WASHINGTON. | (Fla. Terr. Acts 1838, 16th sess., no. 8, sec. 1/p. 9) | 18380126 | 18400224 |
| FRANKLIN | 26 Jan 1838 | 12 Jan 1851 | FRANKLIN lost to creation of CALHOUN and apparently lost a small area to WASHINGTON. | (Fla. Terr. Acts 1838, 16th sess., no. 8, sec. 1/p. 9) | 18380126 | 18510112 |
| WASHINGTON | 25 Feb 1840 | 03 Jan 1847 | WASHINGTON exchanged with CALHOUN. | (Fla. Terr. Acts 1840, 18th sess., no. 21/p. 23) | 18400225 | 18470103 |
| CALHOUN | 25 Feb 1840 | 09 Mar 1845 | CALHOUN exchanged with WASHINGTON. | (Fla. Terr. Acts 1840, 18th sess., no. 21/p. 23) | 18400225 | 18450309 |
| SANTA ROSA | 18 Feb 1842 | 10 Jan 1851 | SANTA ROSA created by Florida Territory from ESCAMBIA. | (Fla. Terr. Acts 1842, 20th sess., no. 1, sec. 1/p. 3) | 18420218 | 18510110 |
| ESCAMBIA | 18 Feb 1842 | 10 Jan 1851 | ESCAMBIA lost to creation of SANTA ROSA. | (Fla. Terr. Acts 1842, 20th sess., no. 1, sec. 1/p. 3) | 18420218 | 18510110 |
| MADISON | 22 Feb 1843 | 04 Feb 1844 | MADISON lost to JEFFERSON. | (Fla. Terr. Acts 1843, 21st sess., no. 48/p. 47) | 18430222 | 18440204 |
| JEFFERSON | 22 Feb 1843 | 04 Feb 1844 | JEFFERSON gained from MADISON. | (Fla. Terr. Acts 1843, 21st sess., no. 48/p. 47) | 18430222 | 18440204 |
| ALACHUA | 24 Feb 1843 | 13 Mar 1844 | ALACHUA lost to creation of HERNANDO. | (Fla. Terr. Acts 1843, 21st sess., no. 51/p. 48) | 18430224 | 18440313 |
| HILLSBOROUGH | 24 Feb 1843 | 05 Mar 1844 | HILLSBOROUGH lost to creation of HERNANDO. | (Fla. Terr. Acts 1843, 21st sess., no. 51/p. 48) | 18430224 | 18440305 |
| HERNANDO | 24 Feb 1843 | 05 Mar 1844 | HERNANDO created by Florida Territory from ALACHUA and HILLSBOROUGH. | (Fla. Terr. Acts 1843, 21st sess., no. 51/p. 48) | 18430224 | 18440305 |
| LEON | 11 Mar 1843 | 05 Jan 1849 | LEON lost to creation of WAKULLA. | (Fla. Terr. Acts 1843, 21st sess., no. 25/p. 29 and no. 30/p. 33) | 18430311 | 18490105 |
| WAKULLA | 11 Mar 1843 | 05 Jan 1849 | WAKULLA created by Florida Territory from LEON. | (Fla. Terr. Acts 1843, 21st sess., no. 25/p. 29 and no. 30/p. 33) | 18430311 | 18490105 |
| MADISON | 05 Feb 1844 | 22 Dec 1856 | MADISON gained from JEFFERSON. | (Fla. Terr. Acts 1844, 22d sess., p. 1) | 18440205 | 18561222 |
| JEFFERSON | 05 Feb 1844 | 10 Mar 1879 | JEFFERSON lost to MADISON. | (Fla. Terr. Acts 1844, 22d sess., p. 1) | 18440205 | 18790310 |
| HILLSBOROUGH | 06 Mar 1844 | 13 Mar 1844 | HILLSBOROUGH lost to BENTON (now HERNANDO). | (Fla. Terr. Acts 1844, 22d sess., p. 16) | 18440306 | 18440313 |
| BENTON | 06 Mar 1844 | 31 Dec 1846 | HERNANDO renamed BENTON; BENTON gained from HILLSBOROUGH. | (Fla. Terr. Acts 1844, 22d sess., p. 16) | 18440306 | 18461231 |
| ALACHUA | 14 Mar 1844 | 14 Mar 1844 | ALACHUA lost to creation of MARION. | (Fla. Terr. Acts 1844, 22d sess., sec. 1/p. 43) | 18440314 | 18440314 |
| ST. JOHNS | 14 Mar 1844 | 24 Dec 1846 | ST. JOHNS lost to creation of MARION. | (Fla. Terr. Acts 1844, 22d sess., sec. 1/p. 43) | 18440314 | 18461224 |
| MARION | 14 Mar 1844 | 24 Dec 1846 | MARION created by Florida Territory from ALACHUA, HILLSBOROUGH, MOSQUITO (now ORANGE), and ST. JOHNS. | (Fla. Terr. Acts 1844, 22d sess., sec. 1/p. 43) | 18440314 | 18461224 |
| MOSQUITO | 14 Mar 1844 | 29 Jan 1845 | MOSQUITO (now ORANGE) apparently gained from HILLSBOROUGH, and lost to creation of MARION and ST. LUCIE (original, now BREVARD). | (Fla. Terr. Acts 1844, 22d sess., sec. 1/pp. 31, 43) | 18440314 | 18450129 |
| HILLSBOROUGH | 14 Mar 1844 | 31 Dec 1846 | HILLSBOROUGH lost to creation of MARION and ST. LUCIE (original, now BREVARD), and apparently lost to MOSQUITO (now ORANGE). | (Fla. Terr. Acts 1844, 22d sess., pp. 31, 43) | 18440314 | 18461231 |
| ST. LUCIE (original) | 14 Mar 1844 | 26 Feb 1845 | ST. LUCIE (original, now BREVARD) created by Florida Territory from HILLSBOROUGH and MOSQUITO (now ORANGE). | (Fla. Terr. Acts 1844, 22d sess., sec. 1/p. 31) | 18440314 | 18450226 |
| ALACHUA | 15 Mar 1844 | 09 Mar 1845 | ALACHUA exchanged small areas with COLUMBIA. Boundary between ALACHUA and DUVAL adjusted. | (Fla. Terr. Acts 1844, 22d sess., p. 55) | 18440315 | 18450309 |
| DUVAL | 15 Mar 1844 | 01 Jan 1857 | DUVAL gained from COLUMBIA; boundary with ALACHUA adjusted. | (Fla. Terr. Acts 1844, 22d sess., p. 55) | 18440315 | 18570101 |
| COLUMBIA | 15 Mar 1844 | 30 Dec 1858 | COLUMBIA exchanged small areas with ALACHUA, lost to DUVAL. | (Fla. Terr. Acts 1844, 22d sess., p. 55) | 18440315 | 18581230 |
| ORANGE | 30 Jan 1845 | 26 Feb 1845 | MOSQUITO renamed ORANGE. | (Fla. Terr. Acts 1845, 23d sess., no. 31/p. 56) | 18450130 | 18450226 |
| ORANGE | 27 Feb 1845 | 24 Dec 1846 | ORANGE gained from ST. LUCIE (original, now BREVARD). | (Fla. Terr. Acts 1845, 23d sess., no. 35/p. 58) | 18450227 | 18461224 |
| ST. LUCIE (original) | 27 Feb 1845 | 27 Dec 1846 | ST. LUCIE (original, now BREVARD) lost to ORANGE. | (Fla. Terr. Acts 1845, 23d sess., no. 35/p. 58) | 18450227 | 18461227 |
| 03 Mar 1845 | Congress created the state of Florida from Florida Territory, with boundaries the same as those set in 1822; Florida Territory eliminated. | (Swindler, 2:332; U.S. Stat., vol. 5, ch. 48 [1845], secs. 1, 5/pp. 742-743) | 18450303 | |||
| ALACHUA | 10 Mar 1845 | 12 Jan 1849 | ALACHUA lost to creation of LEVY. | (Fla. Terr. Acts 1845, 23d sess., no. 30, sec. 1/p. 54) | 18450310 | 18490112 |
| LEVY | 10 Mar 1845 | 05 Feb 1877 | LEVY created from ALACHUA. | (Fla. Terr. Acts 1845, 23d sess., no. 30, sec. 1/p. 54) | 18450310 | 18770205 |
| JACKSON | 10 Mar 1845 | 03 Jan 1847 | JACKSON lost to CALHOUN. | (Fla. Terr. Acts 1845, 23d sess., no. 29/p. 53) | 18450310 | 18470103 |
| CALHOUN | 10 Mar 1845 | 13 Feb 1873 | CALHOUN gained from JACKSON. | (Fla. Terr. Acts 1845, 23d sess., no. 29/p. 53) | 18450310 | 18730213 |
| ORANGE | 25 Dec 1846 | 27 Dec 1846 | ORANGE gained small area from MARION along Lake George. | (Fla. Laws 1846, 2d sess., ch. 106/p. 63) | 18461225 | 18461227 |
| ST. JOHNS | 25 Dec 1846 | 29 Dec 1848 | ST. JOHNS gained from MARION along the St. Johns River and Lake George. | (Fla. Laws 1846, 2d sess., ch. 106/p. 63) | 18461225 | 18481229 |
| MARION | 25 Dec 1846 | 29 Dec 1848 | MARION lost to ORANGE and ST. JOHNS along the St. Johns River and Lake George. | (Fla. Laws 1846, 2d sess., ch. 106/p. 63) | 18461225 | 18481229 |
| ORANGE | 28 Dec 1846 | 09 Jan 1849 | ORANGE lost to ST. LUCIE (original, now BREVARD). | (Fla. Laws 1846, 2d sess., ch. 105/p. 62) | 18461228 | 18490109 |
| ST. LUCIE (original) | 28 Dec 1846 | 09 Jan 1849 | ST. LUCIE (original, now BREVARD) gained from ORANGE. | (Fla. Laws 1846, 2d sess., ch. 105/p. 62) | 18461228 | 18490109 |
| HILLSBOROUGH | 01 Jan 1847 | 08 Jan 1855 | HILLSBOROUGH gained from BENTON (now HERNANDO). | (Fla. Laws 1846, 2d sess., ch. 107/p. 63) | 18470101 | 18550108 |
| BENTON | 01 Jan 1847 | 23 Dec 1850 | BENTON (now HERNANDO) lost to HILLSBOROUGH. | (Fla. Laws 1846, 2d sess., ch. 107/p. 63) | 18470101 | 18501223 |
| JACKSON | 04 Jan 1847 | 27 Dec 1847 | JACKSON lost to WASHINGTON. | (Fla. Laws 1846, 2d sess., ch. 108/p. 64) | 18470104 | 18471227 |
| WASHINGTON | 04 Jan 1847 | 27 Dec 1847 | WASHINGTON gained from JACKSON. | (Fla. Laws 1846, 2d sess., ch. 108/p. 64) | 18470104 | 18471227 |
| WASHINGTON | 28 Dec 1847 | 13 Feb 1873 | WASHINGTON exchanged with JACKSON. | (Fla. Laws 1847, 3d sess., ch. 180/p. 49) | 18471228 | 18730213 |
| JACKSON | 28 Dec 1847 | 07 Jan 1848 | JACKSON exchanged with WASHINGTON. | (Fla. Laws 1847, 3d sess., ch. 180/p. 49) | 18471228 | 18480107 |
| HOLMES | 08 Jan 1848 | 1915-08-07 00:00:00 | HOLMES created from JACKSON and WALTON. | (Fla. Laws 1847, 3d sess., ch. 176, sec. 1/p. 45) | 18480108 | 19150807 |
| WALTON | 08 Jan 1848 | 10 Jan 1851 | WALTON lost to creation of HOLMES. | (Fla. Laws 1847, 3d sess., ch. 176, sec. 1/p. 45) | 18480108 | 18510110 |
| JACKSON | 08 Jan 1848 | 13 Feb 1873 | JACKSON lost to creation of HOLMES. | (Fla. Laws 1847, 3d sess., ch. 176, sec. 1/p. 45) | 18480108 | 18730213 |
| ST. JOHNS | 30 Dec 1848 | 12 Jan 1849 | ST. JOHNS gained from MARION. | (Fla. Laws 1848, 4th sess., ch. 289/p. 96) | 18481230 | 18490112 |
| MARION | 30 Dec 1848 | 07 Jan 1853 | MARION lost to ST. JOHNS. | (Fla. Laws 1848, 4th sess., ch. 289/p. 96) | 18481230 | 18530107 |
| LEON | 06 Jan 1849 | 21 Jan 1851 | LEON lost to WAKULLA. | (Fla. Laws 1848, 4th sess., ch. 288/p. 96) | 18490106 | 18510121 |
| WAKULLA | 06 Jan 1849 | 12 Jan 1851 | WAKULLA gained from LEON. | (Fla. Laws 1848, 4th sess., ch. 288/p. 96) | 18490106 | 18510112 |
| ORANGE | 10 Jan 1849 | 28 Dec 1854 | ORANGE exchanged with ST. LUCIE (original, now BREVARD). | (Fla. Laws 1848, 4th sess., ch. 290/p. 97) | 18490110 | 18541228 |
| ST. LUCIE (original) | 10 Jan 1849 | 05 Jan 1855 | ST. LUCIE (original, now BREVARD) exchanged with ORANGE. | (Fla. Laws 1848, 4th sess., ch. 290/p. 97) | 18490110 | 18550105 |
| ALACHUA | 13 Jan 1849 | 30 Dec 1858 | ALACHUA lost to creation of PUTNAM. | (Fla. Laws 1848, 4th sess., ch. 280, sec. 1/p. 87) | 18490113 | 18581230 |
| ST. JOHNS | 13 Jan 1849 | 14 Jan 1859 | ST. JOHNS lost to creation of PUTNAM. | (Fla. Laws 1848, 4th sess., ch. 280, sec. 1/p. 87) | 18490113 | 18590114 |
| PUTNAM | 13 Jan 1849 | 14 Jan 1859 | PUTNAM created from ALACHUA and ST. JOHNS. | (Fla. Laws 1848, 4th sess., ch. 280, sec. 1/p. 87) | 18490113 | 18590114 |
| HERNANDO | 24 Dec 1850 | 31 Dec 1879 | BENTON renamed HERNANDO. | (Fla. Laws 1850, 5th sess., ch. 415/p. 148) | 18501224 | 18791231 |
| DADE | 07 Jan 1851 | DADE (now MIAMI-DADE) no longer fully organized, attached to MONROE for administrative and judicial purposes. | (Fla. Laws 1850, 5th sess., ch. 400/p. 140; Hudson, 14-15) | 18510107 | ||
| MONROE | 07 Jan 1851 | DADE (now MIAMI-DADE) no longer fully organized; DADE attached to MONROE for administrative and judicial purposes. | (Fla. Laws 1850, 5th sess., ch. 400/p. 140; Hudson, 14-15) | 18510107 | ||
| WALTON | 11 Jan 1851 | 13 Jan 1853 | WALTON gained part of Santa Rosa Island from ESCAMBIA, exchanged with SANTA ROSA. | (Fla. Laws 1850, 5th sess., ch. 411/p. 146) | 18510111 | 18530113 |
| SANTA ROSA | 11 Jan 1851 | 13 Jan 1853 | SANTA ROSA exchanged with WALTON. | (Fla. Laws 1850, 5th sess., ch. 411/p. 146) | 18510111 | 18530113 |
| ESCAMBIA | 11 Jan 1851 | 1947-05-30 00:00:00 | ESCAMBIA lost part of Santa Rosa Island to WALTON. | (Fla. Laws 1850, 5th sess., ch. 411/p. 146) | 18510111 | 19470530 |
| FRANKLIN | 13 Jan 1851 | 15 Feb 1885 | FRANKLIN gained from WAKULLA when the boundary shifted from the west bank to the east bank of the Ochlockonee River; FRANKLIN exchanged with GADSDEN. | (Fla. Laws 1850, 5th sess., chs. 412, 413/p. 147) | 18510113 | 18850215 |
| WAKULLA | 13 Jan 1851 | 21 Jan 1851 | WAKULLA lost to FRANKLIN when the boundary shifted from the west bank to the east bank of the Ochlockonee River. | (Fla. Laws 1850, 5th sess., chs. 412-413/p. 147) | 18510113 | 18510121 |
| GADSDEN | 13 Jan 1851 | 14 Dec 1855 | GADSDEN exchanged with FRANKLIN. | (Fla. Laws 1850, 5th sess., chs. 412, 413/p. 147) | 18510113 | 18551214 |
| LEON | 22 Jan 1851 | 10 Mar 1879 | LEON lost to WAKULLA. | (Fla. Laws 1850, 5th sess., ch. 414/p. 148) | 18510122 | 18790310 |
| WAKULLA | 22 Jan 1851 | 1986-09-30 00:00:00 | WAKULLA gained from LEON. | (Fla. Laws 1850, 5th sess., ch. 414/p. 148) | 18510122 | 19860930 |
| MARION | 08 Jan 1853 | 05 Feb 1877 | MARION lost to creation of SUMTER. | (Fla. Laws 1852, 6th sess., ch. 548, sec. 1/p. 124) | 18530108 | 18770205 |
| SUMTER | 08 Jan 1853 | 12 Dec 1866 | SUMTER created from MARION. | (Fla. Laws 1852, 6th sess., ch. 548, sec. 1/p. 124) | 18530108 | 18661212 |
| WALTON | 14 Jan 1853 | 1913-05-16 00:00:00 | WALTON lost to SANTA ROSA. | (Fla. Laws 1852, 6th sess., ch. 571/p. 145) | 18530114 | 19130516 |
| SANTA ROSA | 14 Jan 1853 | 1915-09-06 00:00:00 | SANTA ROSA gained from WALTON. | (Fla. Laws 1852, 6th sess., ch. 571/p. 145) | 18530114 | 19150906 |
| ORANGE | 29 Dec 1854 | 05 Dec 1866 | ORANGE lost to creation of VOLUSIA. | (Fla. Laws 1854, 7th sess., ch. 624/p. 44) | 18541229 | 18661205 |
| VOLUSIA | 29 Dec 1854 | 14 Feb 1875 | VOLUSIA created from ORANGE. | (Fla. Laws 1854, 7th sess., ch. 624/p. 44) | 18541229 | 18750214 |
| BREVARD | 06 Jan 1855 | 12 Jan 1859 | ST. LUCIE (original) renamed BREVARD. | (Fla. Laws 1854, 7th sess., ch. 651/p. 61) | 18550106 | 18590112 |
| HILLSBOROUGH | 09 Jan 1855 | 07 Feb 1861 | HILLSBOROUGH lost to creation of MANATEE. | (Fla. Laws 1854, 7th sess., ch. 628/p. 47) | 18550109 | 18610207 |
| MANATEE | 09 Jan 1855 | 12 Jan 1859 | MANATEE created from HILLSBOROUGH. | (Fla. Laws 1854, 7th sess., ch. 628/p. 47) | 18550109 | 18590112 |
| LIBERTY | 15 Dec 1855 | 21 Dec 1859 | LIBERTY created from GADSDEN [mistake in description corrected 5 January 1859]. | (Fla. Laws 1855, adj. sess., ch. 771/p. 50) | 18551215 | 18591221 |
| GADSDEN | 15 Dec 1855 | 21 Dec 1859 | GADSDEN lost to creation of LIBERTY [mistake in description corrected 5 January 1859]. | (Fla. Laws 1855, adj. sess., ch. 771/p. 50) | 18551215 | 18591221 |
| MADISON | 23 Dec 1856 | 1923-05-30 00:00:00 | MADISON lost to creation of LAFAYETTE and TAYLOR. | (Fla. Laws 1856, 8th sess., ch. 806, secs. 1-3/p. 48) | 18561223 | 19230530 |
| TAYLOR | 23 Dec 1856 | 20 Dec 1858 | TAYLOR created from MADISON. | (Fla. Laws 1856, 8th sess., ch. 806, secs. 1-3/p. 48) | 18561223 | 18581220 |
| LAFAYETTE | 23 Dec 1856 | 20 Dec 1858 | LAFAYETTE created from MADISON. | (Fla. Laws 1856, 8th sess., ch. 806, secs. 1-3/p. 48) | 18561223 | 18581220 |
| NASSAU | 02 Jan 1857 | 14 Jan 1859 | 1828 overlap between DUVAL and NASSAU ended; based upon their most recently defined configurations, NASSAU appeared to exchange with DUVAL, while DUVAL appeared to lose to NASSAU. | (Fla. Laws 1856, 8th sess., ch. 811/p. 55) | 18570102 | 18590114 |
| DUVAL | 02 Jan 1857 | 30 Dec 1858 | 1828 overlap between DUVAL and NASSAU ended; based upon their most recently defined configurations, DUVAL appeared to lose to NASSAU, while NASSAU appeared to exchange with DUVAL. | (Fla. Laws 1856, 8th sess., ch. 811/p. 55) | 18570102 | 18581230 |
| Overlap Area | 02 Jan 1857 | 1828 overlap between NASSAU and DUVAL ended. | (Fla. Laws 1856, 8th sess., ch. 811/p. 55) | 18570102 | ||
| TAYLOR | 21 Dec 1858 | 12 Feb 1877 | TAYLOR lost to LAFAYETTE. | (Fla. Laws 1858, 9th sess., ch. 921/p. 55) | 18581221 | 18770212 |
| LAFAYETTE | 21 Dec 1858 | 12 Feb 1877 | LAFAYETTE gained from TAYLOR. | (Fla. Laws 1858, 9th sess., ch. 921/p. 55) | 18581221 | 18770212 |
| ALACHUA | 31 Dec 1858 | 02 Feb 1870 | ALACHUA lost to creation of CLAY. | (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19) | 18581231 | 18700202 |
| DUVAL | 31 Dec 1858 | 14 Jan 1859 | DUVAL lost to creation of CLAY. | (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19) | 18581231 | 18590114 |
| COLUMBIA | 31 Dec 1858 | 27 Feb 1859 | COLUMBIA lost to creation of CLAY. | (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19) | 18581231 | 18590227 |
| CLAY | 31 Dec 1858 | 14 Jan 1859 | CLAY created from ALACHUA, COLUMBIA, and DUVAL. | (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19) | 18581231 | 18590114 |
| LIBERTY | 05 Jan 1859 | LIBERTY boundaries were clarified, correcting mistake of 15 December 1855 [no change]. | (Fla. Laws 1858, 9th sess., ch. 949/p. 120) | 18590105 | ||
| GADSDEN | 05 Jan 1859 | Boundary between GADSDEN and LIBERTY was clarified, correcting mistake of 15 December 1855 [no change]. | (Fla. Laws 1858, 9th sess., ch. 949/p. 120) | 18590105 | ||
| BREVARD | 13 Jan 1859 | 07 Feb 1861 | BREVARD exchanged with MANATEE. | (Fla. Laws 1858, 9th sess., ch. 922/p. 56) | 18590113 | 18610207 |
| MONROE | 13 Jan 1859 | 07 Dec 1866 | MONROE lost to MANATEE. | (Fla. Laws 1858, 9th sess., ch. 922/p. 56) | 18590113 | 18661207 |
| MANATEE | 13 Jan 1859 | 18 Feb 1874 | MANATEE gained from MONROE, exchanged with BREVARD. | (Fla. Laws 1858, 9th sess., ch. 922/p. 56) | 18590113 | 18740218 |
| NASSAU | 15 Jan 1859 | 1911-05-18 00:00:00 | NASSAU lost to DUVAL. | (Fla. Laws 1858, 9th sess., ch. 920/p. 55) | 18590115 | 19110518 |
| DUVAL | 15 Jan 1859 | 21 Dec 1859 | DUVAL gained from NASSAU. | (Fla. Laws 1858, 9th sess., ch. 920/p. 55) | 18590115 | 18591221 |
| SUMTER | 15 Jan 1859 | SUMTER lost small area to MARION to accommodate local resident [location unknown, not mapped]. | (Fla. Laws 1858, 9th sess., ch. 973/p. 133) | 18590115 | ||
| MARION | 15 Jan 1859 | MARION gained small area from SUMTER to accommodate local resident [location unknown, not mapped]. | (Fla. Laws 1858, 9th sess., ch. 973/p. 133) | 18590115 | ||
| ST. JOHNS | 15 Jan 1859 | 21 Dec 1859 | ST. JOHNS exchanged with PUTNAM in the St. Johns River and Crescent Lake. | (Fla. Laws 1858, 9th sess., ch. 923/p. 57) | 18590115 | 18591221 |
| CLAY | 15 Jan 1859 | 21 Dec 1859 | CLAY lost to PUTNAM. | (Fla. Laws 1858, 9th sess., ch. 923/p. 57) | 18590115 | 18591221 |
| PUTNAM | 15 Jan 1859 | 21 Dec 1859 | PUTNAM gained from CLAY, exchanged with ST. JOHNS in the St. Johns River and Crescent Lake. | (Fla. Laws 1858, 9th sess., ch. 923/p. 57) | 18590115 | 18591221 |
| COLUMBIA | 28 Feb 1859 | 11 Dec 1859 | In February 1859, COLUMBIA lost to creation of NEW RIVER (now BRADFORD) and SUWANNEE. | (Fla. Laws 1858, 9th sess., ch. 895, secs. 1-4/p. 37) | 18590228 | 18591211 |
| NEW RIVER | 28 Feb 1859 | 07 Feb 1861 | In February 1859, NEW RIVER (now BRADFORD) was created from COLUMBIA. | (Fla. Laws 1858, 9th sess., ch. 895, secs. 1-4/p. 37) | 18590228 | 18610207 |
| SUWANNEE | 28 Feb 1859 | 11 Dec 1859 | In February 1859, SUWANNEE was created from COLUMBIA. | (Fla. Laws 1858, 9th sess., ch. 895, secs. 1-4/p. 37) | 18590228 | 18591211 |
| COLUMBIA | 12 Dec 1859 | 29 May 1889 | COLUMBIA gained from SUWANNEE. | (Fla. Laws 1859, adj. sess., ch. 1048/p. 69) | 18591212 | 18890529 |
| SUWANNEE | 12 Dec 1859 | 29 May 1889 | SUWANNEE lost to COLUMBIA. | (Fla. Laws 1859, adj. sess., ch. 1048/p. 69) | 18591212 | 18890529 |
| ST. JOHNS | 22 Dec 1859 | 29 Jul 1868 | ST. JOHNS lost small area in the St. Johns River to CLAY when the boundary shifted from the west bank to the west margin of the channel. | (Fla. Laws 1859, adj. sess., ch. 1039/p. 63) | 18591222 | 18680729 |
| PUTNAM | 22 Dec 1859 | 29 Jul 1868 | PUTNAM lost to CLAY. | (Fla. Laws 1859, adj. sess., ch. 1039/p. 63) | 18591222 | 18680729 |
| DUVAL | 22 Dec 1859 | 14 Feb 1875 | DUVAL lost small area in the St. Johns River to CLAY when the boundary shifted from the west bank to the west margin of the channel. | (Fla. Laws 1859, adj. sess., ch. 1039/p. 63) | 18591222 | 18750214 |
| CLAY | 22 Dec 1859 | 25 Feb 1883 | CLAY gained from PUTNAM and gained small areas in the St. Johns River from DUVAL and ST. JOHNS when the boundary shifted from the west bank to the west margin of the channel. | (Fla. Laws 1859, adj. sess., ch. 1039/p. 63) | 18591222 | 18830225 |
| LIBERTY | 22 Dec 1859 | 15 Feb 1885 | LIBERTY exchanged with GADSDEN. | (Fla. Laws 1859, adj. sess., ch. 1046/p. 68) | 18591222 | 18850215 |
| GADSDEN | 22 Dec 1859 | 1909-12-31 00:00:00 | GADSDEN exchanged with LIBERTY. | (Fla. Laws 1859, adj. sess., ch. 1046/p. 68) | 18591222 | 19091231 |
| BAKER | 08 Feb 1861 | 1911-05-18 00:00:00 | BAKER created from NEW RIVER (now BRADFORD). | (Fla. Laws 1860, 10th sess., ch. 1185/p. 179) | 18610208 | 19110518 |
| NEW RIVER | 08 Feb 1861 | 05 Dec 1861 | NEW RIVER (now BRADFORD) lost to creation of BAKER. | (Fla. Laws 1860, 10th sess., ch. 1185/p. 179) | 18610208 | 18611205 |
| HILLSBOROUGH | 08 Feb 1861 | 12 Dec 1866 | HILLSBOROUGH lost to creation of POLK. | (Fla. Laws 1860, 10th sess., ch. 1201/p. 192; Fla. Rpts., 120:429-431) | 18610208 | 18661212 |
| BREVARD | 08 Feb 1861 | 05 Dec 1866 | BREVARD lost to creation of POLK. | (Fla. Laws 1860, 10th sess., ch. 1201/p. 192; Fla. Rpts., 120:429-431) | 18610208 | 18661205 |
| POLK | 08 Feb 1861 | 29 Jan 1871 | POLK created from BREVARD and HILLSBOROUGH. | (Fla. Laws 1860, 10th sess., ch. 1201/p. 192; Fla. Rpts., 120:429-431) | 18610208 | 18710129 |
| BRADFORD | 06 Dec 1861 | 02 Feb 1870 | NEW RIVER renamed BRADFORD. | (Fla. Laws 1861, 11th sess., ch. 1300/p. 53) | 18611206 | 18700202 |
| COLUMBIA | 27 Nov 1863 | COLUMBIA lost small area to SUWANNEE so as to include the entire town of Wellborn in SUWANNEE [change too small to display on interactive map; shapefile users see small_changes 1863_pt. for location]. | (Fla. Laws 1863, 12th sess., ch. 1391/p. 11) | 18631127 | ||
| SUWANNEE | 27 Nov 1863 | SUWANNEE gained small area from COLUMBIA so as to include the entire town of Wellborn in SUWANNEE [change too small to display on interactive map; shapefile users see small_changes 1863_pt. for location]. | (Fla. Laws 1863, 12th sess., ch. 1391/p. 11) | 18631127 | ||
| ORANGE | 06 Dec 1866 | 13 Feb 1872 | ORANGE gained from BREVARD. | (Fla. Laws 1866, 14th sess., ch. 1621/p. 82) | 18661206 | 18720213 |
| BREVARD | 06 Dec 1866 | 07 Dec 1866 | BREVARD lost to ORANGE. | (Fla. Laws 1866, 14th sess., ch. 1621/p. 82) | 18661206 | 18661207 |
| DADE | 08 Dec 1866 | 18 Feb 1874 | DADE (now MIAMI-DADE) gained from BREVARD, exchanged with MONROE [DADE lost in the Florida Keys]. DADE continued to be attached to MONROE. | (Fla. Laws 1866, 14th sess., ch. 1592/p. 62) | 18661208 | 18740218 |
| BREVARD | 08 Dec 1866 | 17 Feb 1873 | BREVARD lost to DADE (now MIAMI-DADE). | (Fla. Laws 1866, 14th sess., ch. 1592/p. 62) | 18661208 | 18730217 |
| MONROE | 08 Dec 1866 | 18 Feb 1874 | MONROE exchanged with DADE (now MIAMI-DADE) [MONROE gained in the Florida Keys]. | (Fla. Laws 1866, 14th sess., ch. 1592/p. 62) | 18661208 | 18740218 |
| HILLSBOROUGH | 10 Dec 1866 | HILLSBOROUGH gained small area from POLK to accommodate local resident [change too small to display on interactive map; shapefile users see small_changes 1866_pt. for location]. | (Fla. Laws 1866, 14th sess., ch. 1622/p. 82) | 18661210 | ||
| POLK | 10 Dec 1866 | POLK lost small area to HILLSBOROUGH to accommodate local resident [change too small to display on interactive map; shapefile users see small_changes 1866_pt. for location]. | (Fla. Laws 1866, 14th sess., ch. 1622/p. 82) | 18661210 | ||
| HILLSBOROUGH | 13 Dec 1866 | 18 Feb 1874 | HILLSBOROUGH lost to SUMTER. | (Fla. Laws 1866, 14th sess., ch. 1589/p. 61) | 18661213 | 18740218 |
| SUMTER | 13 Dec 1866 | 29 Jan 1871 | SUMTER gained from HILLSBOROUGH. | (Fla. Laws 1866, 14th sess., ch. 1589/p. 61) | 18661213 | 18710129 |
| ST. JOHNS | 30 Jul 1868 | 14 Feb 1875 | ST. JOHNS lost to PUTNAM. | (Fla. Laws 1868, 1st sess., ch. 1673/p. 174) | 18680730 | 18750214 |
| PUTNAM | 30 Jul 1868 | 14 Feb 1875 | PUTNAM gained from ST. JOHNS. | (Fla. Laws 1868, 1st sess., ch. 1673/p. 174) | 18680730 | 18750214 |
| BRADFORD | 03 Feb 1870 | 1921-09-30 00:00:00 | BRADFORD gained from ALACHUA. | (Fla. Laws 1870, 3d sess., ch. 1765/p. 45) | 18700203 | 19210930 |
| ALACHUA | 03 Feb 1870 | 1911-06-02 00:00:00 | ALACHUA lost to BRADFORD. | (Fla. Laws 1870, 3d sess., ch. 1765/p. 45) | 18700203 | 19110602 |
| ORANGE | 14 Feb 1870 | Boundary between ORANGE and VOLUSIA was clarified to run west of Huntoon's Island [no change]. | (Fla. Laws 1870, 3d sess., ch. 1764/p. 45) | 18700214 | ||
| VOLUSIA | 14 Feb 1870 | Boundary between VOLUSIA and ORANGE was clarified to run west of Huntoon's Island [no change]. | (Fla. Laws 1870, 3d sess., ch. 1764/p. 45) | 18700214 | ||
| SUMTER | 30 Jan 1871 | 13 Feb 1872 | SUMTER lost to POLK. | (Fla. Laws 1871, 4th sess., ch. 1848/p. 36) | 18710130 | 18720213 |
| POLK | 30 Jan 1871 | 18 Feb 1874 | POLK gained from SUMTER. | (Fla. Laws 1871, 4th sess., ch. 1848/p. 36) | 18710130 | 18740218 |
| ORANGE | 14 Feb 1872 | 17 Feb 1873 | ORANGE gained from SUMTER. | (Fla. Laws 1872, 5th sess., ch. 1895/p. 52) | 18720214 | 18730217 |
| SUMTER | 14 Feb 1872 | 04 Mar 1879 | SUMTER lost to ORANGE. | (Fla. Laws 1872, 5th sess., ch. 1895/p. 52) | 18720214 | 18790304 |
| DADE | 31 Dec 1872 | In 1872, DADE (now MIAMI-DADE) was fully organized, detached from MONROE. | (Hudson, 18-21) | 18721231 | ||
| MONROE | 31 Dec 1872 | In 1872, DADE (now MIAMI-DADE) was fully organized, detached from MONROE. | (Hudson, 18-21) | 18721231 | ||
| JACKSON | 14 Feb 1873 | 27 Feb 1875 | JACKSON gained from CALHOUN. | (Fla. Laws 1873, 6th sess., ch. 1954/p. 28) | 18730214 | 18750227 |
| WASHINGTON | 14 Feb 1873 | 03 Jun 1897 | WASHINGTON gained from CALHOUN [mistake in description corrected 2 June 1893]. | (Fla. Laws 1873, 6th sess., ch. 1950/p. 27) | 18730214 | 18970603 |
| CALHOUN | 14 Feb 1873 | 27 Feb 1875 | CALHOUN lost to JACKSON and WASHINGTON. | (Fla. Laws 1873, 6th sess., chs. 1950, 1954/pp. 27-28) | 18730214 | 18750227 |
| ORANGE | 18 Feb 1873 | 18 Feb 1874 | ORANGE lost to BREVARD. | (Fla. Laws 1873, 6th sess., ch. 1964/p. 36) | 18730218 | 18740218 |
| BREVARD | 18 Feb 1873 | 18 Feb 1874 | BREVARD gained from ORANGE. | (Fla. Laws 1873, 6th sess., ch. 1964/p. 36) | 18730218 | 18740218 |
| DADE | 19 Feb 1874 | 1909-06-30 00:00:00 | DADE (now MIAMI-DADE) gained from BREVARD, lost to MONROE. | (Fla. Laws 1874, 7th sess., ch. 1998/p. 63) | 18740219 | 19090630 |
| MANATEE | 19 Feb 1874 | 20 Feb 1877 | MANATEE gained from BREVARD, exchanged with MONROE. | (Fla. Laws 1874, 7th sess., ch. 1998/p. 63) | 18740219 | 18770220 |
| HILLSBOROUGH | 19 Feb 1874 | 1911-11-13 00:00:00 | HILLSBOROUGH lost to POLK. | (Fla. Laws 1874, 7th sess., ch. 1998/p. 63) | 18740219 | 19111113 |
| BREVARD | 19 Feb 1874 | 10 Mar 1879 | BREVARD lost to DADE (now MIAMI-DADE), MANATEE, and ORANGE. | (Fla. Laws 1874, 7th sess., ch. 1998/p. 63) | 18740219 | 18790310 |
| ORANGE | 19 Feb 1874 | 04 Mar 1879 | ORANGE gained from BREVARD. | (Fla. Laws 1874, 7th sess., ch. 1998/p. 63) | 18740219 | 18790304 |
| POLK | 19 Feb 1874 | 04 Mar 1879 | POLK gained from HILLSBOROUGH. | (Fla. Laws 1874, 7th sess., ch. 1998/p. 63) | 18740219 | 18790304 |
| MONROE | 19 Feb 1874 | 20 Feb 1877 | MONROE gained from DADE (now MIAMI-DADE), exchanged with MANATEE. | (Fla. Laws 1874, 7th sess., ch. 1998/p. 63) | 18740219 | 18770220 |
| ST. JOHNS | 15 Feb 1875 | 23 May 1899 | ST. JOHNS gained from VOLUSIA, exchanged with DUVAL and PUTNAM. | (Fla. Laws 1875, 8th sess., ch. 2068/p. 70) | 18750215 | 18990523 |
| DUVAL | 15 Feb 1875 | 1911-05-18 00:00:00 | DUVAL exchanged with ST. JOHNS. | (Fla. Laws 1875, 8th sess., ch. 2068/p. 70) | 18750215 | 19110518 |
| VOLUSIA | 15 Feb 1875 | 10 Mar 1879 | VOLUSIA lost to ST. JOHNS. | (Fla. Laws 1875, 8th sess., ch. 2068/p. 70) | 18750215 | 18790310 |
| PUTNAM | 15 Feb 1875 | 25 Feb 1883 | PUTNAM exchanged with ST. JOHNS in the St. Johns River and Crescent Lake. | (Fla. Laws 1875, 8th sess., ch. 2068/p. 70) | 18750215 | 18830225 |
| JACKSON | 28 Feb 1875 | 30 May 1897 | In February 1875, JACKSON lost to CALHOUN. | (Fla. Laws 1875, 8th sess., ch. 2061/p. 67) | 18750228 | 18970530 |
| CALHOUN | 28 Feb 1875 | 30 May 1897 | In February 1875, CALHOUN gained from JACKSON. | (Fla. Laws 1875, 8th sess., ch. 2061/p. 67) | 18750228 | 18970530 |
| LEVY | 06 Feb 1877 | 1911-06-02 00:00:00 | LEVY gained from MARION. | (Fla. Laws 1877, 9th sess., ch. 3060/p. 120) | 18770206 | 19110602 |
| MARION | 06 Feb 1877 | 27 May 1887 | MARION lost to LEVY. | (Fla. Laws 1877, 9th sess., ch. 3060/p. 120) | 18770206 | 18870527 |
| TAYLOR | 13 Feb 1877 | 30 Jan 1883 | TAYLOR gained from LAFAYETTE. | (Fla. Laws 1877, 9th sess., ch. 3061/p. 121) | 18770213 | 18830130 |
| LAFAYETTE | 13 Feb 1877 | 30 Jan 1883 | LAFAYETTE lost to TAYLOR. | (Fla. Laws 1877, 9th sess., ch. 3061/p. 121) | 18770213 | 18830130 |
| MONROE | 21 Feb 1877 | 12 May 1887 | MONROE exchanged with MANATEE. | (Fla. Laws 1877, 9th sess., ch. 3062/p. 121) | 18770221 | 18870512 |
| MANATEE | 21 Feb 1877 | 18 May 1887 | MANATEE exchanged with MONROE. | (Fla. Laws 1877, 9th sess., ch. 3062/p. 121) | 18770221 | 18870518 |
| ORANGE | 05 Mar 1879 | 10 Jul 1887 | ORANGE gained from POLK. | (Fla. Laws 1879, 10th sess., ch. 3177/p. 141) | 18790305 | 18870710 |
| POLK | 05 Mar 1879 | 31 Dec 1879 | POLK lost to ORANGE and SUMTER. | (Fla. Laws 1879, 10th sess., ch. 3177/p. 141) | 18790305 | 18791231 |
| SUMTER | 05 Mar 1879 | 25 Jul 1887 | SUMTER gained from POLK. | (Fla. Laws 1879, 10th sess., ch. 3177/p. 141) | 18790305 | 18870725 |
| VOLUSIA | 11 Mar 1879 | 23 May 1899 | VOLUSIA lost to BREVARD. | (Fla. Laws 1879, 10th sess., ch. 3175/p. 140) | 18790311 | 18990523 |
| BREVARD | 11 Mar 1879 | 10 Jul 1887 | BREVARD gained from VOLUSIA. | (Fla. Laws 1879, 10th sess., ch. 3175/p. 140) | 18790311 | 18870710 |
| JEFFERSON | 11 Mar 1879 | 06 Feb 1881 | JEFFERSON lost to LEON. | (Fla. Laws 1879, 10th sess., ch. 3176/p. 140) | 18790311 | 18810206 |
| LEON | 11 Mar 1879 | 06 Feb 1881 | LEON gained from JEFFERSON. | (Fla. Laws 1879, 10th sess., ch. 3176/p. 140) | 18790311 | 18810206 |
| HERNANDO | 01 Jan 1880 | 04 Mar 1883 | By 1880, HERNANDO gained from POLK. | (Rand, McNally, 1880, 254-255) | 18800101 | 18830304 |
| POLK | 01 Jan 1880 | 04 Mar 1883 | By 1880, POLK lost to HERNANDO. | (Rand, McNally, 1880, 254-255) | 18800101 | 18830304 |
| WALTON | 27 Jan 1881 | WALTON was granted concurrent jurisdiction with WASHINGTON over the waters of Choctawhatchee Bay [not mapped]. | (Fla. Laws 1881, 11th sess., ch. 3258/p. 73) | 18810127 | ||
| WASHINGTON | 27 Jan 1881 | WASHINGTON was granted concurrent jurisdiction with WALTON over the waters of Choctawhatchee Bay [not mapped]. | (Fla. Laws 1881, 11th sess., ch. 3258/p. 73) | 18810127 | ||
| JEFFERSON | 07 Feb 1881 | 1923-05-30 00:00:00 | JEFFERSON gained from LEON. | (Fla. Laws 1881, 11th sess., ch. 3304/p. 101) | 18810207 | 19230530 |
| LEON | 07 Feb 1881 | 2000-12-31 00:00:00 | LEON lost to JEFFERSON. | (Fla. Laws 1881, 11th sess., ch. 3304/p. 101) | 18810207 | 20001231 |
| TAYLOR | 31 Jan 1883 | 27 May 1887 | TAYLOR lost to LAFAYETTE [mistake in description corrected 12 February 1885]. | (Fla. Laws 1883, 12th sess., ch. 3470/p. 79) | 18830131 | 18870527 |
| LAFAYETTE | 31 Jan 1883 | 27 May 1887 | LAFAYETTE gained from TAYLOR [mistake in description corrected 12 February 1885]. | (Fla. Laws 1883, 12th sess., ch. 3470/p. 79) | 18830131 | 18870527 |
| PUTNAM | 26 Feb 1883 | 27 May 1887 | PUTNAM lost to CLAY. | (Fla. Laws 1883, 12th sess., ch. 3469/p. 79) | 18830226 | 18870527 |
| CLAY | 26 Feb 1883 | 1927-06-05 00:00:00 | CLAY gained from PUTNAM. | (Fla. Laws 1883, 12th sess., ch. 3469/p. 79) | 18830226 | 19270605 |
| HERNANDO | 05 Mar 1883 | 01 Jun 1887 | HERNANDO lost small area to POLK. | (Fla. Laws 1883, 12th sess., ch. 3471/p. 80) | 18830305 | 18870601 |
| POLK | 05 Mar 1883 | 30 May 1889 | POLK gained small area from HERNANDO. | (Fla. Laws 1883, 12th sess., ch. 3471/p. 80) | 18830305 | 18890530 |
| TAYLOR | 12 Feb 1885 | Boundary between TAYLOR and LAFAYETTE was redefined, correcting mistake of 31 January 1883 [no change]. | (Fla. Laws 1885, 13th sess., ch. 3625/p. 64) | 18850212 | ||
| LAFAYETTE | 12 Feb 1885 | Boundary between LAFAYETTE and TAYLOR was redefined, correcting mistake of 31 January 1883 [no change]. | (Fla. Laws 1885, 13th sess., ch. 3625/p. 64) | 18850212 | ||
| FRANKLIN | 16 Feb 1885 | 1972-03-29 00:00:00 | FRANKLIN gained a narrow strip of territory all along its boundary with LIBERTY. | (Fla. Laws 1885, 13th sess., ch. 3624/p. 63) | 18850216 | 19720329 |
| LIBERTY | 16 Feb 1885 | 1909-12-31 00:00:00 | LIBERTY lost a narrow strip of territory all along its boundary with FRANKLIN. | (Fla. Laws 1885, 13th sess., ch. 3624/p. 63) | 18850216 | 19091231 |
| MONROE | 13 May 1887 | 1961-05-12 00:00:00 | MONROE lost to creation of LEE. | (Fla. Laws 1887, 1st sess., ch. 3769/p. 150) | 18870513 | 19610512 |
| LEE | 13 May 1887 | 1923-07-06 00:00:00 | LEE created from MONROE. | (Fla. Laws 1887, 1st sess., ch. 3769/p. 150) | 18870513 | 19230706 |
| DE SOTO | 19 May 1887 | 1921-04-22 00:00:00 | DE SOTO created from MANATEE. | (Fla. Laws 1887, 1st sess., ch. 3770, secs. 1-3/pp. 151-152) | 18870519 | 19210422 |
| MANATEE | 19 May 1887 | 1921-06-14 00:00:00 | MANATEE lost to creation of DE SOTO. | (Fla. Laws 1887, 1st sess., ch. 3770, secs. 1-3/pp. 151-152) | 18870519 | 19210614 |
| MARION | 28 May 1887 | 1973-12-30 00:00:00 | MARION exchanged with PUTNAM. | (Fla. Laws 1887, 1st sess., ch. 3767/p. 147) | 18870528 | 19731230 |
| PUTNAM | 28 May 1887 | 1927-06-05 00:00:00 | PUTNAM exchanged with MARION. | (Fla. Laws 1887, 1st sess., ch. 3767/p. 147) | 18870528 | 19270605 |
| TAYLOR | 28 May 1887 | 1911-05-23 00:00:00 | TAYLOR gained from LAFAYETTE. | (Fla. Laws 1887, 1st sess., ch. 3766/p. 147) | 18870528 | 19110523 |
| LAFAYETTE | 28 May 1887 | 1911-05-23 00:00:00 | LAFAYETTE lost to TAYLOR. | (Fla. Laws 1887, 1st sess., ch. 3766/p. 147) | 18870528 | 19110523 |
| CITRUS | 02 Jun 1887 | 2000-12-31 00:00:00 | CITRUS created from HERNANDO. | (Fla. Laws 1887, 1st sess., ch. 3772, secs. 1, 8/pp. 157-159) | 18870602 | 20001231 |
| HERNANDO | 02 Jun 1887 | 2000-12-31 00:00:00 | HERNANDO lost to creation of CITRUS and PASCO. | (Fla. Laws 1887, 1st sess., ch. 3772, secs. 1, 8/pp. 157-159) | 18870602 | 20001231 |
| PASCO | 02 Jun 1887 | 09 Jun 1891 | PASCO created from HERNANDO. | (Fla. Laws 1887, 1st sess., ch. 3772, secs. 1, 8/pp. 157-159) | 18870602 | 18910609 |
| ORANGE | 11 Jul 1887 | 25 Jul 1887 | ORANGE lost to creation of OSCEOLA and lost small area to BREVARD. | (Fla. Laws 1887, 1st sess., ch. 3768/p. 148) | 18870711 | 18870725 |
| BREVARD | 11 Jul 1887 | 1905-06-30 00:00:00 | BREVARD lost to creation of OSCEOLA, gained small area from ORANGE. | (Fla. Laws 1887, 1st sess., ch. 3768/p. 148) | 18870711 | 19050630 |
| OSCEOLA | 11 Jul 1887 | 1917-08-06 00:00:00 | OSCEOLA created from BREVARD and ORANGE. | (Fla. Laws 1887, 1st sess., ch. 3768/p. 148) | 18870711 | 19170806 |
| ORANGE | 26 Jul 1887 | 30 May 1889 | ORANGE lost to creation of LAKE. | (Fla. Laws 1887, 1st sess., ch. 3771, secs. 1-2/pp. 154-155) | 18870726 | 18890530 |
| SUMTER | 26 Jul 1887 | 30 May 1889 | SUMTER lost to creation of LAKE. | (Fla. Laws 1887, 1st sess., ch. 3771, secs. 1-2/pp. 154-155) | 18870726 | 18890530 |
| LAKE | 26 Jul 1887 | 30 May 1889 | LAKE created from ORANGE and SUMTER. | (Fla. Laws 1887, 1st sess., ch. 3771, secs. 1-2/pp. 154-155) | 18870726 | 18890530 |
| COLUMBIA | 30 May 1889 | 1953-12-31 00:00:00 | COLUMBIA exchanged with SUWANNEE. | (Fla. Laws 1889, ext. sess., ch. 3948/p. 181) | 18890530 | 19531231 |
| SUWANNEE | 30 May 1889 | 2000-12-31 00:00:00 | SUWANNEE exchanged with COLUMBIA. | (Fla. Laws 1889, ext. sess., ch. 3948/p. 181) | 18890530 | 20001231 |
| ORANGE | 31 May 1889 | 1913-04-24 00:00:00 | ORANGE lost small area to LAKE. | (Fla. Laws 1889, ext. sess., ch. 3944/p. 176) | 18890531 | 19130424 |
| LAKE | 31 May 1889 | 09 Jun 1891 | LAKE gained small area from ORANGE. | (Fla. Laws 1889, ext. sess., ch. 3944/p. 176) | 18890531 | 18910609 |
| SUMTER | 31 May 1889 | 2000-12-31 00:00:00 | SUMTER lost to POLK. | (Fla. Laws 1889, ext. sess., ch. 3932/p. 167) | 18890531 | 20001231 |
| POLK | 31 May 1889 | 09 Jun 1891 | POLK gained from SUMTER. | (Fla. Laws 1889, ext. sess., ch. 3932/p. 167) | 18890531 | 18910609 |
| PASCO | 10 Jun 1891 | 1942-07-28 00:00:00 | PASCO lost to POLK. | (Fla. Laws 1891, 3d sess., ch. 4066/p. 108) | 18910610 | 19420728 |
| POLK | 10 Jun 1891 | 1942-07-28 00:00:00 | POLK gained small area from LAKE and gained from PASCO. | (Fla. Laws 1891, 3d sess., ch. 4066/p. 108) | 18910610 | 19420728 |
| LAKE | 10 Jun 1891 | 2000-12-31 00:00:00 | LAKE lost small area to POLK. | (Fla. Laws 1891, 3d sess., ch. 4066/p. 108) | 18910610 | 20001231 |
| WASHINGTON | 02 Jun 1893 | WASHINGTON boundaries were redefined, correcting mistake of 14 February 1873 [no change]. | (Fla. Laws 1893, 4th sess., ch. 4236/p. 169) | 18930602 | ||
| JACKSON | 31 May 1897 | 1915-08-07 00:00:00 | JACKSON exchanged with CALHOUN. | (Fla. Laws 1897, 6th sess., ch. 4576/p. 119) | 18970531 | 19150807 |
| CALHOUN | 31 May 1897 | 03 Jun 1897 | CALHOUN exchanged with JACKSON. | (Fla. Laws 1897, 6th sess., ch. 4576/p. 119) | 18970531 | 18970603 |
| WASHINGTON | 04 Jun 1897 | 1913-05-16 00:00:00 | WASHINGTON exchanged with CALHOUN. | (Fla. Laws 1897, 6th sess., ch. 4577/p. 119) | 18970604 | 19130516 |
| CALHOUN | 04 Jun 1897 | 1913-06-30 00:00:00 | CALHOUN exchanged with WASHINGTON. | (Fla. Laws 1897, 6th sess., ch. 4577/p. 119) | 18970604 | 19130630 |
| VOLUSIA | 24 May 1899 | 1917-06-11 00:00:00 | VOLUSIA gained small area from ST. JOHNS. | (Fla. Laws 1899, 7th sess., ch. 4811, secs. 1-2/pp. 209-210) | 18990524 | 19170611 |
| ST. JOHNS | 24 May 1899 | 1917-06-11 00:00:00 | ST. JOHNS lost small area to VOLUSIA. | (Fla. Laws 1899, 7th sess., ch. 4811, secs. 1-2/pp. 209-210) | 18990524 | 19170611 |
| BREVARD | 1905-07-01 00:00:00 | 1959-11-02 00:00:00 | BREVARD lost to creation of ST. LUCIE. | (Fla. Laws 1905, 10th sess., ch. 5567, secs. 1, 22/pp. 404, 408) | 19050701 | 19591102 |
| ST. LUCIE | 1905-07-01 00:00:00 | 1917-08-06 00:00:00 | ST. LUCIE created from BREVARD. | (Fla. Laws 1905, 10th sess., ch. 5567, secs. 1, 22/pp. 404, 408) | 19050701 | 19170806 |
| ST. JOHNS | 1907-06-03 00:00:00 | Boundary between ST. JOHNS and VOLUSIA was clarified [no change]. | (Fla. Laws 1907, 11th sess., ch. 5730, secs. 1-2/pp. 244-245) | 19070603 | ||
| VOLUSIA | 1907-06-03 00:00:00 | Boundary between VOLUSIA and ST. JOHNS was clarified [no change]. | (Fla. Laws 1907, 11th sess., ch. 5730, secs. 1-2/pp. 244-245) | 19070603 | ||
| CLAY | 1909-05-05 00:00:00 | CLAY lost small area to PUTNAM in the town of Melrose [change too small to display on interactive map; shapefile users see small_changes 1909_pt. for location]. | (Fla. Laws 1909, 12th sess., ch. 5978/p. 184) | 19090505 | ||
| PUTNAM | 1909-05-05 00:00:00 | PUTNAM gained small area from CLAY in the town of Melrose [change too small to display on interactive map; shapefile users see small_changes 1909_pt. for location]. | (Fla. Laws 1909, 12th sess., ch. 5978/p. 184) | 19090505 | ||
| COLUMBIA | 1909-05-29 00:00:00 | COLUMBIA boundaries were clarified [no change]. | (Fla. Laws 1909, 12th sess., ch. 5979/p. 184) | 19090529 | ||
| DADE | 1909-07-01 00:00:00 | 1915-09-30 00:00:00 | DADE (now MIAMI-DADE) lost to creation of PALM BEACH. | (Fla. Laws 1909, 12th sess., ch. 5970, sec. 1/p. 174) | 19090701 | 19150930 |
| PALM BEACH | 1909-07-01 00:00:00 | 1915-09-30 00:00:00 | PALM BEACH created from DADE (now MIAMI-DADE). | (Fla. Laws 1909, 12th sess., ch. 5970, sec. 1/p. 174) | 19090701 | 19150930 |
| LIBERTY | 1910-01-01 00:00:00 | 2000-12-31 00:00:00 | LIBERTY exchanged with GADSDEN. | (Fla. Laws 1909, 12th sess., ch. 5966, secs. 1-2, 4/pp. 169-171) | 19100101 | 20001231 |
| GADSDEN | 1910-01-01 00:00:00 | 2000-12-31 00:00:00 | GADSDEN exchanged with LIBERTY. | (Fla. Laws 1909, 12th sess., ch. 5966, secs. 1-2, 4/pp. 169-171) | 19100101 | 20001231 |
| NASSAU | 1911-05-19 00:00:00 | 2000-12-31 00:00:00 | NASSAU gained from BAKER. | (Fla. Laws 1911, 13th sess., ch. 6244/p. 216) | 19110519 | 20001231 |
| BAKER | 1911-05-19 00:00:00 | 2000-12-31 00:00:00 | BAKER gained from DUVAL, lost to NASSAU. | (Fla. Laws 1911, 13th sess., ch. 6244/p. 216) | 19110519 | 20001231 |
| DUVAL | 1911-05-19 00:00:00 | 1976-06-30 00:00:00 | DUVAL lost to BAKER. | (Fla. Laws 1911, 13th sess., ch. 6244/p. 216) | 19110519 | 19760630 |
| TAYLOR | 1911-05-24 00:00:00 | 2000-12-31 00:00:00 | TAYLOR lost to LAFAYETTE. | (Fla. Laws 1911, 13th sess., ch. 6246/p. 218) | 19110524 | 20001231 |
| LAFAYETTE | 1911-05-24 00:00:00 | 1921-04-24 00:00:00 | LAFAYETTE gained from TAYLOR. | (Fla. Laws 1911, 13th sess., ch. 6246/p. 218) | 19110524 | 19210424 |
| CITRUS | 1911-06-02 00:00:00 | CITRUS gained non-county area in the Withlacoochee River along the LEVY line when the boundary shifted from the middle of the river to the north bank [not mapped]. | (Fla. Laws 1911, 13th sess., ch. 6245/p. 217) | 19110602 | ||
| ALACHUA | 1911-06-03 00:00:00 | 1913-06-06 00:00:00 | ALACHUA exchanged with LEVY. | (Fla. Laws 1911, 13th sess., ch. 6243/p. 215) | 19110603 | 19130606 |
| LEVY | 1911-06-03 00:00:00 | 1913-06-06 00:00:00 | LEVY exchanged with ALACHUA. | (Fla. Laws 1911, 13th sess., ch. 6243/p. 215) | 19110603 | 19130606 |
| HILLSBOROUGH | 1911-11-14 00:00:00 | 1939-05-14 00:00:00 | HILLSBOROUGH lost to creation of PINELLAS. | (Fla. Laws 1911, 13th sess., ch. 6247, secs. 1, 20-21/pp. 219, 223; Grismer, St. Petersburg, 35; HRS Fla., Pinellas, 9) | 19111114 | 19390514 |
| PINELLAS | 1911-11-14 00:00:00 | 1939-05-14 00:00:00 | PINELLAS created from HILLSBOROUGH. | (Fla. Laws 1911, 13th sess., ch. 6247, secs. 1, 20-21/pp. 219, 223; Grismer, St. Petersburg, 35; HRS Fla., Pinellas, 9) | 19111114 | 19390514 |
| ORANGE | 1913-04-25 00:00:00 | 2000-12-31 00:00:00 | ORANGE lost to creation of SEMINOLE [mistake in description corrected 22 June 1961]. | (Fla. Laws 1913, 14th sess., gen., ch. 6511, sec. 1/p. 365) | 19130425 | 20001231 |
| SEMINOLE | 1913-04-25 00:00:00 | 2000-12-31 00:00:00 | SEMINOLE created from ORANGE [mistake in description corrected 31 May 1961]. | (Fla. Laws 1913, 14th sess., gen., ch. 6511, sec. 1/p. 365) | 19130425 | 20001231 |
| WALTON | 1913-05-17 00:00:00 | 1915-09-06 00:00:00 | WALTON gained from WASHINGTON. | (Fla. Laws 1913, 14th sess., gen., ch. 6508, sec. 1/p. 359) | 19130517 | 19150906 |
| WASHINGTON | 1913-05-17 00:00:00 | 1913-06-30 00:00:00 | WASHINGTON lost to WALTON. | (Fla. Laws 1913, 14th sess., gen., ch. 6508, sec. 1/p. 359) | 19130517 | 19130630 |
| DADE | 1913-06-06 00:00:00 | Legislature authorized creation of BROWARD (proposed) from DADE (now MIAMI-DADE), dependent on local referendum that failed [no change]. | (Fla. Laws 1913, 14th sess., gen., ch. 6504, secs. 1, 22/pp. 341, 346; McIver, 64) | 19130606 | ||
| BROWARD (proposed) | 1913-06-06 00:00:00 | 1913-06-06 00:00:00 | Legislature authorized creation of BROWARD (proposed) from DADE (now MIAMI-DADE), dependent on local referendum that failed; boundaries differed from present BROWARD. | (Fla. Laws 1913, 14th sess., gen., ch. 6504, secs. 1, 22/pp. 341, 346; McIver, 64) | 19130606 | 19130606 |
| ALACHUA | 1913-06-07 00:00:00 | 1925-12-31 00:00:00 | ALACHUA lost small area to LEVY. | (Fla. Laws 1913, 14th sess., gen., ch. 6509/p. 363) | 19130607 | 19251231 |
| LEVY | 1913-06-07 00:00:00 | 2000-12-31 00:00:00 | LEVY gained small area from ALACHUA. | (Fla. Laws 1913, 14th sess., gen., ch. 6509/p. 363) | 19130607 | 20001231 |
| WASHINGTON | 1913-07-01 00:00:00 | 1915-08-07 00:00:00 | WASHINGTON lost to creation of BAY. | (Fla. Laws 1913, 14th sess., gen., ch. 6505, secs. 1, 24/pp. 347, 353; ch. 6506/p. 354; and ch. 6508/p. 359) | 19130701 | 19150807 |
| CALHOUN | 1913-07-01 00:00:00 | 1925-07-06 00:00:00 | CALHOUN lost to creation of BAY. | (Fla. Laws 1913, 14th sess., gen., ch. 6505, secs. 1, 24/pp. 347, 353; ch. 6506/p. 354; and ch. 6508/p. 359) | 19130701 | 19250706 |
| BAY | 1913-07-01 00:00:00 | 2000-12-31 00:00:00 | BAY created from CALHOUN and WASHINGTON. | (Fla. Laws 1913, 14th sess., gen., ch. 6505, secs. 1, 24/pp. 347, 353; ch. 6506/p. 354; and ch. 6508/p. 359) | 19130701 | 20001231 |
| MARION | 1915-06-01 00:00:00 | Legislature authorized the creation of BLOXHAM (proposed) from LEVY and MARION, dependent on local referendum that failed [no change]. | (Fla. Laws 1915, 15th sess., gen., ch. 6936, secs. 1, 20-21/pp. 298-303; Morris, 25; "Battle of Bloxham") | 19150601 | ||
| LEVY | 1915-06-01 00:00:00 | Legislature authorized the creation of BLOXHAM (proposed) from LEVY and MARION, dependent on local referendum that failed [no change]. | (Fla. Laws 1915, 15th sess., gen., ch. 6936, secs. 1, 20-21/pp. 298-303; Morris, 25; "Battle of Bloxham") | 19150601 | ||
| BLOXHAM (proposed) | 1915-06-01 00:00:00 | 1915-06-01 00:00:00 | Legislature authorized the creation of BLOXHAM (proposed) from LEVY and MARION, dependent on local referendum that failed. | (Fla. Laws 1915, 15th sess., gen., ch. 6936, secs. 1, 20-21/pp. 298-303; Morris, 25; "Battle of Bloxham") | 19150601 | 19150601 |
| HOLMES | 1915-08-08 00:00:00 | 2000-12-31 00:00:00 | HOLMES gained from WASHINGTON. | (Fla. Laws 1915, 15th sess., gen., ch. 6935, secs. 1-2, 16/pp. 292-293, 297) | 19150808 | 20001231 |
| JACKSON | 1915-08-08 00:00:00 | 2000-12-31 00:00:00 | JACKSON lost to WASHINGTON. | (Fla. Laws 1915, 15th sess., gen., ch. 6935, secs. 1-2, 16/pp. 292-293, 297) | 19150808 | 20001231 |
| WASHINGTON | 1915-08-08 00:00:00 | 2000-12-31 00:00:00 | WASHINGTON gained from JACKSON, lost to HOLMES. | (Fla. Laws 1915, 15th sess., gen., ch. 6935, secs. 1-2, 16/pp. 292-293, 297) | 19150808 | 20001231 |
| WALTON | 1915-09-07 00:00:00 | 2000-12-31 00:00:00 | WALTON lost to creation of OKALOOSA. | (Fla. Laws 1915, 15th sess., gen., ch. 6937, secs. 1, 24-25/pp. 303, 310; HRS Fla., Okaloosa, 6) | 19150907 | 20001231 |
| OKALOOSA | 1915-09-07 00:00:00 | 1947-05-30 00:00:00 | OKALOOSA created from SANTA ROSA and WALTON. | (Fla. Laws 1915, 15th sess., gen., ch. 6937, secs. 1, 24-25/pp. 303, 310; HRS Fla., Okaloosa, 6) | 19150907 | 19470530 |
| SANTA ROSA | 1915-09-07 00:00:00 | 1951-06-10 00:00:00 | SANTA ROSA lost to creation of OKALOOSA. | (Fla. Laws 1915, 15th sess., gen., ch. 6937, secs. 1, 24-25/pp. 303, 310; HRS Fla., Okaloosa, 6) | 19150907 | 19510610 |
| DADE | 1915-10-01 00:00:00 | 1961-05-12 00:00:00 | DADE (now MIAMI-DADE) lost to creation of BROWARD. | (Fla. Laws 1915, 15th sess., gen., ch. 6934, secs. 1, 23/pp. 285, 292) | 19151001 | 19610512 |
| BROWARD | 1915-10-01 00:00:00 | 2000-12-31 00:00:00 | BROWARD created from DADE (now MIAMI-DADE) and PALM BEACH. On 6 June 1913 an attempt was made to create BROWARD in the same general area, but creation did not take effect. | (Fla. Laws 1915, 15th sess., gen., ch. 6934, secs. 1, 23/pp. 285, 292) | 19151001 | 20001231 |
| PALM BEACH | 1915-10-01 00:00:00 | 1917-08-06 00:00:00 | PALM BEACH lost to creation of BROWARD. | (Fla. Laws 1915, 15th sess., gen., ch. 6934, secs. 1, 23/pp. 285, 292) | 19151001 | 19170806 |
| FLAGLER | 1917-06-12 00:00:00 | 2000-12-31 00:00:00 | FLAGLER created from ST. JOHNS and VOLUSIA. | (Fla. Laws 1917, 16th sess., gen., ch. 7399, secs. 1, 22-23/pp. 277, 284) | 19170612 | 20001231 |
| ST. JOHNS | 1917-06-12 00:00:00 | 2000-12-31 00:00:00 | ST. JOHNS lost to creation of FLAGLER. | (Fla. Laws 1917, 16th sess., gen., ch. 7399, secs. 1, 22-23/pp. 277, 284) | 19170612 | 20001231 |
| VOLUSIA | 1917-06-12 00:00:00 | 2000-12-31 00:00:00 | VOLUSIA lost to creation of FLAGLER. | (Fla. Laws 1917, 16th sess., gen., ch. 7399, secs. 1, 22-23/pp. 277, 284) | 19170612 | 20001231 |
| OKEECHOBEE | 1917-08-07 00:00:00 | 1963-05-28 00:00:00 | OKEECHOBEE created from OSCEOLA, PALM BEACH, and ST. LUCIE. | (Fla. Laws 1917, 16th sess., gen., ch. 7401, secs. 1, 20-21/pp. 285, 289-290; Van Landingham and Hetherington, 66) | 19170807 | 19630528 |
| PALM BEACH | 1917-08-07 00:00:00 | 1925-05-07 00:00:00 | PALM BEACH lost to creation of OKEECHOBEE. | (Fla. Laws 1917, 16th sess., gen., ch. 7401, secs. 1, 20-21/pp. 285, 289-290; Van Landingham and Hetherington, 66) | 19170807 | 19250507 |
| ST. LUCIE | 1917-08-07 00:00:00 | 1925-06-28 00:00:00 | ST. LUCIE lost to creation of OKEECHOBEE. | (Fla. Laws 1917, 16th sess., gen., ch. 7401, secs. 1, 20-21/pp. 285, 289-290; Van Landingham and Hetherington, 66) | 19170807 | 19250628 |
| OSCEOLA | 1917-08-07 00:00:00 | 1967-12-31 00:00:00 | OSCEOLA lost to creation of OKEECHOBEE. | (Fla. Laws 1917, 16th sess., gen., ch. 7401, secs. 1, 20-21/pp. 285, 289-290; Van Landingham and Hetherington, 66) | 19170807 | 19671231 |
| CHARLOTTE | 1921-04-23 00:00:00 | 2000-12-31 00:00:00 | CHARLOTTE created from DE SOTO. | (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281) | 19210423 | 20001231 |
| HARDEE | 1921-04-23 00:00:00 | 2000-12-31 00:00:00 | HARDEE created from DE SOTO. | (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281) | 19210423 | 20001231 |
| GLADES | 1921-04-23 00:00:00 | 1925-05-07 00:00:00 | GLADES created from DE SOTO. | (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281) | 19210423 | 19250507 |
| DE SOTO | 1921-04-23 00:00:00 | 2000-12-31 00:00:00 | DE SOTO lost to creation of CHARLOTTE, GLADES, HARDEE, and HIGHLANDS. | (Fla. Laws 1921, 18th sess., gen., ch. 8513, pp. 279-281) | 19210423 | 20001231 |
| HIGHLANDS | 1921-04-23 00:00:00 | 1949-06-12 00:00:00 | HIGHLANDS created from DE SOTO. | (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281) | 19210423 | 19490612 |
| LAFAYETTE | 1921-04-25 00:00:00 | 2000-12-31 00:00:00 | LAFAYETTE lost to creation of DIXIE. | (Fla. Laws 1921, 18th sess., gen., ch. 8514, sec. 1/p. 289) | 19210425 | 20001231 |
| DIXIE | 1921-04-25 00:00:00 | 2000-12-31 00:00:00 | DIXIE created from LAFAYETTE. | (Fla. Laws 1921, 18th sess., gen., ch. 8514, sec. 1/p. 289) | 19210425 | 20001231 |
| SARASOTA | 1921-06-15 00:00:00 | 2000-12-31 00:00:00 | SARASOTA created from MANATEE. | (Fla. Laws 1921, 18th sess., gen., ch. 8515, secs. 1, 22-23/pp. 294, 300; Grismer, Sarasota, 200-201) | 19210615 | 20001231 |
| MANATEE | 1921-06-15 00:00:00 | 2000-12-31 00:00:00 | MANATEE lost to creation of SARASOTA. | (Fla. Laws 1921, 18th sess., gen., ch. 8515, secs. 1, 22-23/pp. 294, 300; Grismer, Sarasota, 200-201) | 19210615 | 20001231 |
| UNION | 1921-10-01 00:00:00 | 2000-12-31 00:00:00 | UNION created from BRADFORD. | (Fla. Laws 1921, 18th sess., gen., ch. 8516, secs. 1, 27/pp. 301, 307) | 19211001 | 20001231 |
| BRADFORD | 1921-10-01 00:00:00 | 1927-06-05 00:00:00 | BRADFORD lost to creation of UNION. | (Fla. Laws 1921, 18th sess., gen., ch. 8516, secs. 1, 27/pp. 301, 307) | 19211001 | 19270605 |
| MADISON | 1923-05-31 00:00:00 | 2000-12-31 00:00:00 | In May 1923, MADISON exchanged with JEFFERSON. | (Fla. Laws 1923, 19th sess., gen., ch. 9361/p. 467) | 19230531 | 20001231 |
| JEFFERSON | 1923-05-31 00:00:00 | 2000-12-31 00:00:00 | In May 1923, JEFFERSON exchanged with MADISON. | (Fla. Laws 1923, 19th sess., gen., ch. 9361/p. 467) | 19230531 | 20001231 |
| COLLIER | 1923-07-07 00:00:00 | 2000-12-31 00:00:00 | COLLIER created from LEE. | (Fla. Laws 1923, 19th sess., gen., ch. 9362, secs. 1, 26/pp. 468, 476) | 19230707 | 20001231 |
| LEE | 1923-07-07 00:00:00 | 1923-07-09 00:00:00 | LEE lost to creation of COLLIER. | (Fla. Laws 1923, 19th sess., gen., ch. 9362, secs. 1, 26/pp. 468, 476) | 19230707 | 19230709 |
| HENDRY | 1923-07-10 00:00:00 | 1925-05-13 00:00:00 | HENDRY created from LEE. | (Fla. Laws 1923, 19th sess., gen., ch. 9360, secs. 1, 26/pp. 459, 467) | 19230710 | 19250513 |
| LEE | 1923-07-10 00:00:00 | 2000-12-31 00:00:00 | LEE lost to creation of HENDRY. | (Fla. Laws 1923, 19th sess., gen., ch. 9360, secs. 1, 26/pp. 459, 467) | 19230710 | 20001231 |
| PALM BEACH | 1925-05-08 00:00:00 | 1925-05-13 00:00:00 | PALM BEACH lost part of Lake Okeechobee to GLADES. | (Fla. Laws 1925, 20th sess., spec., ch. 10596/p. 1860) | 19250508 | 19250513 |
| GLADES | 1925-05-08 00:00:00 | 1937-09-06 00:00:00 | GLADES gained part of Lake Okeechobee from PALM BEACH. | (Fla. Laws 1925, 20th sess., spec., ch. 10596/p. 1860) | 19250508 | 19370906 |
| HENDRY | 1925-05-14 00:00:00 | 1937-09-06 00:00:00 | HENDRY gained a small part of Lake Okeechobee from PALM BEACH. | (Fla. Laws 1925, 20th sess., gen., ch. 10090/p. 112) | 19250514 | 19370906 |
| PALM BEACH | 1925-05-14 00:00:00 | 1925-08-03 00:00:00 | PALM BEACH lost small part of Lake Okeechobee to HENDRY. | (Fla. Laws 1925, 20th sess., gen., ch. 10090/p. 112) | 19250514 | 19250803 |
| LEVY | 1925-06-04 00:00:00 | LEVY gained small area from DIXIE when the boundary shifted from the east bank to the middle of the Suwannee River [not mapped]. | (Fla. Laws 1925, 20th sess., spec., ch. 10778/p. 2518) | 19250604 | ||
| DIXIE | 1925-06-04 00:00:00 | DIXIE lost small area to LEVY when the boundary shifted from the east bank to the middle of the Suwannee River [not mapped]. | (Fla. Laws 1925, 20th sess., spec., ch. 10778/p. 2518) | 19250604 | ||
| ST. LUCIE | 1925-06-29 00:00:00 | 1925-08-03 00:00:00 | ST. LUCIE lost to creation of INDIAN RIVER. | (Fla. Laws 1925, 20th sess., gen., ch. 10148, sec. 1/p. 294) | 19250629 | 19250803 |
| INDIAN RIVER | 1925-06-29 00:00:00 | 1959-11-02 00:00:00 | INDIAN RIVER created from ST. LUCIE. | (Fla. Laws 1925, 20th sess., gen., ch. 10148, sec. 1/p. 294) | 19250629 | 19591102 |
| CALHOUN | 1925-07-07 00:00:00 | 2000-12-31 00:00:00 | CALHOUN lost to creation of GULF. | (Fla. Laws 1925, 20th sess., gen., ch. 10132, secs. 1, 25-26/pp. 237, 244) | 19250707 | 20001231 |
| GULF | 1925-07-07 00:00:00 | 1972-03-29 00:00:00 | GULF created from CALHOUN. | (Fla. Laws 1925, 20th sess., gen., ch. 10132, secs. 1, 25-26/pp. 237, 244) | 19250707 | 19720329 |
| PALM BEACH | 1925-08-04 00:00:00 | 1963-05-28 00:00:00 | PALM BEACH lost to creation of MARTIN. | (Fla. Laws 1925, 20th sess., gen., ch. 10180, secs. 1, 25-26/pp. 359, 368; Hutchinson, front endpapers) | 19250804 | 19630528 |
| ST. LUCIE | 1925-08-04 00:00:00 | 2000-12-31 00:00:00 | ST. LUCIE lost to creation of MARTIN. | (Fla. Laws 1925, 20th sess., gen., ch. 10180, secs. 1, 25-26/pp. 359, 368; Hutchinson, front endpapers) | 19250804 | 20001231 |
| MARTIN | 1925-08-04 00:00:00 | 1963-05-28 00:00:00 | MARTIN created from PALM BEACH and ST. LUCIE. | (Fla. Laws 1925, 20th sess., gen., ch. 10180, secs. 1, 25-26/pp. 359, 368; Hutchinson, front endpapers) | 19250804 | 19630528 |
| ALACHUA | 1926-01-01 00:00:00 | 1953-12-31 00:00:00 | ALACHUA lost to creation of GILCHRIST. | (Fla. Laws 1925, ext. sess., ch. 11371, secs. 1, 19-20/pp. 66, 70; McCarthy, 73) | 19260101 | 19531231 |
| GILCHRIST | 1926-01-01 00:00:00 | 2000-12-31 00:00:00 | GILCHRIST created from ALACHUA. | (Fla. Laws 1925, ext. sess., ch. 11371, secs. 1, 19-20/pp. 66, 70; McCarthy, 73) | 19260101 | 20001231 |
| BRADFORD | 1927-06-06 00:00:00 | 1953-12-31 00:00:00 | BRADFORD lost small area to PUTNAM. | (Fla. Laws 1927, 21st sess., gen., ch. 12489, sec. 1/p. 1585) | 19270606 | 19531231 |
| CLAY | 1927-06-06 00:00:00 | 1976-06-30 00:00:00 | CLAY lost small area to PUTNAM. | (Fla. Laws 1927, 21st sess., gen., ch. 12489, sec. 1/p. 1585) | 19270606 | 19760630 |
| PUTNAM | 1927-06-06 00:00:00 | 1984-06-13 00:00:00 | PUTNAM gained small areas from BRADFORD and CLAY. | (Fla. Laws 1927, 21st sess., gen., ch. 12489, sec. 1/p. 1585) | 19270606 | 19840613 |
| LEON | 1933-05-04 00:00:00 | LEON lost to GADSDEN when the boundary shifted from the west bank to the middle of the Ochlockonee River [not mapped]. | (Fla. Laws 1933, 24th sess., spec., ch. 16436/p. 493) | 19330504 | ||
| GADSDEN | 1933-05-04 00:00:00 | GADSDEN gained from LEON when the boundary shifted from the west bank to the middle of the Ochlockonee River [not mapped]. | (Fla. Laws 1933, 24th sess., spec., ch. 16436/p. 493) | 19330504 | ||
| HENDRY | 1937-09-07 00:00:00 | 1963-05-28 00:00:00 | HENDRY gained small area from GLADES. | (Fla. Laws 1937, 26th sess., spec., ch. 18568, secs. 1, 6/pp. 535, 537) | 19370907 | 19630528 |
| GLADES | 1937-09-07 00:00:00 | 1949-06-12 00:00:00 | GLADES lost small area to HENDRY. | (Fla. Laws 1937, 26th sess., spec., ch. 18568, secs. 1, 6/pp. 535, 537) | 19370907 | 19490612 |
| HILLSBOROUGH | 1939-05-15 00:00:00 | 2000-12-31 00:00:00 | HILLSBOROUGH lost small area (Mullet Key) to PINELLAS. | (Fla. Laws 1939, 27th sess., gen., ch. 19058/p. 116) | 19390515 | 20001231 |
| PINELLAS | 1939-05-15 00:00:00 | 2000-12-31 00:00:00 | PINELLAS gained small area (Mullet Key) from HILLSBOROUGH. | (Fla. Laws 1939, 27th sess., gen., ch. 19058/p. 116) | 19390515 | 20001231 |
| VOLUSIA | 1941-06-12 00:00:00 | Part of the boundary between VOLUSIA and SEMINOLE was clarified [no discernible change]. | (Fla. Laws 1941, 28th sess., gen., ch. 20888/p. 2358) | 19410612 | ||
| SEMINOLE | 1941-06-12 00:00:00 | Part of the boundary between SEMINOLE and VOLUSIA was clarified [no discernible change]. | (Fla. Laws 1941, 28th sess., gen., ch. 20888/p. 2358) | 19410612 | ||
| HENDRY | 1942-07-29 00:00:00 | HENDRY boundaries were redefined [mistake in description corrected 11 June 1945, no change]. | (Fla. Stat., 1941, 1:secs. 7.22, 7.26, 7.51, 7.53) | 19420729 | ||
| PASCO | 1942-07-29 00:00:00 | 1949-12-30 00:00:00 | PASCO gained from POLK. | (Fla. Stat., 1941, 1:secs. 7.22, 7.26, 7.51, 7.53) | 19420729 | 19491230 |
| POLK | 1942-07-29 00:00:00 | 1949-12-30 00:00:00 | POLK lost to PASCO. | (Fla. Stat., 1941, 1:secs. 7.22, 7.26, 7.51, 7.53) | 19420729 | 19491230 |
| HENDRY | 1945-06-11 00:00:00 | HENDRY boundaries were clarified, correcting mistake of 29 July 1942 [no change]. | (Fla. Laws 1945, 30th sess., gen., ch. 22858, sec. 7/p. 862) | 19450611 | ||
| OKALOOSA | 1947-05-31 00:00:00 | 2000-12-31 00:00:00 | OKALOOSA gained from ESCAMBIA on Santa Rosa Island. | (Fla. Laws 1947, 31st sess., gen., ch. 23867/p. 483) | 19470531 | 20001231 |
| ESCAMBIA | 1947-05-31 00:00:00 | 1951-06-10 00:00:00 | ESCAMBIA lost to OKALOOSA on Santa Rosa Island. | (Fla. Laws 1947, 31st sess., gen., ch. 23867/p. 483) | 19470531 | 19510610 |
| HIGHLANDS | 1949-06-13 00:00:00 | 2000-12-31 00:00:00 | HIGHLANDS lost small area to GLADES. | (Fla. Laws 1949, 32d sess., gen., ch. 25612, sec. 1/p. 1342) | 19490613 | 20001231 |
| GLADES | 1949-06-13 00:00:00 | 1963-05-28 00:00:00 | GLADES gained small area from HIGHLANDS. | (Fla. Laws 1949, 32d sess., gen., ch. 25612, sec. 1/p. 1342) | 19490613 | 19630528 |
| PASCO | 1949-12-31 00:00:00 | 2000-12-31 00:00:00 | PASCO lost to POLK. | (Fla. Laws 1949, 32d sess., gen., ch. 25440, secs. 1-2/pp. 1055-1056; Fla. Laws 1949, ext. sess., ch. 26347/p. 125) | 19491231 | 20001231 |
| POLK | 1949-12-31 00:00:00 | 1967-12-31 00:00:00 | POLK gained from PASCO. | (Fla. Laws 1949, 32d sess., gen., ch. 25440, secs. 1-2/pp. 1055-1056; Fla. Laws 1949, ext. sess., ch. 26347/p. 125) | 19491231 | 19671231 |
| SANTA ROSA | 1951-06-11 00:00:00 | 1957-06-28 00:00:00 | SANTA ROSA gained small area from ESCAMBIA on Santa Rosa Island. | (Fla. Laws 1951, 33d sess., gen., ch. 26860/p. 742) | 19510611 | 19570628 |
| ESCAMBIA | 1951-06-11 00:00:00 | 1957-06-28 00:00:00 | ESCAMBIA lost small area to SANTA ROSA on Santa Rosa Island. | (Fla. Laws 1951, 33d sess., gen., ch. 26860/p. 742) | 19510611 | 19570628 |
| ALACHUA | 1954-01-01 00:00:00 | 1973-12-30 00:00:00 | ALACHUA exchanged small areas with BRADFORD and COLUMBIA along the Santa Fe River. | (Fla. Laws 1953, 34th sess., gen., ch. 28312, secs. 1-3, 6/pp. 973-979) | 19540101 | 19731230 |
| BRADFORD | 1954-01-01 00:00:00 | 2000-12-31 00:00:00 | BRADFORD exchanged small areas with ALACHUA along the Santa Fe River. | (Fla. Laws 1953, 34th sess., gen., ch. 28312, secs. 1-3, 6/pp. 973-979) | 19540101 | 20001231 |
| COLUMBIA | 1954-01-01 00:00:00 | 2000-12-31 00:00:00 | COLUMBIA exchanged small areas with ALACHUA along the Santa Fe River. | (Fla. Laws 1953, 34th sess., gen., ch. 28312, secs. 1-3, 6/pp. 973-979) | 19540101 | 20001231 |
| SANTA ROSA | 1957-06-29 00:00:00 | 1991-04-26 00:00:00 | SANTA ROSA gained small area from ESCAMBIA along the right-of-way of the toll bridge and road on Santa Rosa Sound and Island. | (Fla. Laws 1957, 36th sess., gen., ch. 57-834/p. 1181) | 19570629 | 19910426 |
| ESCAMBIA | 1957-06-29 00:00:00 | 1991-04-26 00:00:00 | ESCAMBIA lost small area to SANTA ROSA along the right-of-way of the toll bridge and road on Santa Rosa Sound and Island. | (Fla. Laws 1957, 36th sess., gen., ch. 57-834/p. 1181) | 19570629 | 19910426 |
| FLAGLER | 1959-06-20 00:00:00 | Boundary between FLAGLER and PUTNAM in Crescent Lake was clarified [no discernible change]. | (Fla. Laws 1959, 37th sess., gen., ch. 59-488, secs. 1-2/pp. 1629-1630) | 19590620 | ||
| PUTNAM | 1959-06-20 00:00:00 | Boundary between PUTNAM and FLAGLER in Crescent Lake was clarified [no discernible change]. | (Fla. Laws 1959, 37th sess., gen., ch. 59-488, secs. 1-2/pp. 1629-1630) | 19590620 | ||
| BREVARD | 1959-11-03 00:00:00 | 2000-12-31 00:00:00 | BREVARD lost small area south of Sebastian Inlet to INDIAN RIVER. | (Fla. Laws 1959, 37th sess., gen., ch. 59-486/p. 1626) | 19591103 | 20001231 |
| INDIAN RIVER | 1959-11-03 00:00:00 | 2000-12-31 00:00:00 | INDIAN RIVER gained small area south of Sebastian Inlet from BREVARD. | (Fla. Laws 1959, 37th sess., gen., ch. 59-486/p. 1626) | 19591103 | 20001231 |
| DADE | 1961-05-13 00:00:00 | 1997-11-12 00:00:00 | DADE (now MIAMI-DADE) gained small area on Barnes Sound from MONROE. | (Fla. Laws 1961, 38th sess., gen., ch. 61-16/p. 44) | 19610513 | 19971112 |
| MONROE | 1961-05-13 00:00:00 | 2000-12-31 00:00:00 | MONROE lost small area on Barnes Sound to DADE (now MIAMI-DADE). | (Fla. Laws 1961, 38th sess., gen., ch. 61-16/p. 44) | 19610513 | 20001231 |
| SEMINOLE | 1961-05-31 00:00:00 | SEMINOLE boundaries were redefined, correcting mistake of 25 April 1913 [no change]. | (Fla. Laws 1961, 38th sess., gen., ch. 61-167, secs. 1-2/pp. 279-281) | 19610531 | ||
| ORANGE | 1961-06-22 00:00:00 | ORANGE boundaries were redefined, correcting mistake of 25 April 1913 [no change]. | (Fla. Laws 1961, 38th sess., gen., ch. 61-483/p. 1075) | 19610622 | ||
| HENDRY | 1963-05-29 00:00:00 | 2000-12-31 00:00:00 | HENDRY gained part of Lake Okeechobee from PALM BEACH. | (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454) | 19630529 | 20001231 |
| PALM BEACH | 1963-05-29 00:00:00 | 2000-12-31 00:00:00 | PALM BEACH lost parts of Lake Okeechobee to GLADES, HENDRY, MARTIN, and OKEECHOBEE. | (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454) | 19630529 | 20001231 |
| GLADES | 1963-05-29 00:00:00 | 2000-12-31 00:00:00 | GLADES gained part of Lake Okeechobee from PALM BEACH. | (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454) | 19630529 | 20001231 |
| OKEECHOBEE | 1963-05-29 00:00:00 | 2000-12-31 00:00:00 | OKEECHOBEE gained part of Lake Okeechobee from PALM BEACH. | (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454) | 19630529 | 20001231 |
| MARTIN | 1963-05-29 00:00:00 | 2000-12-31 00:00:00 | MARTIN gained part of Lake Okeechobee from PALM BEACH. | (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454) | 19630529 | 20001231 |
| HENDRY | 1963-06-12 00:00:00 | HENDRY gained small area from GLADES along Route 80 [not mapped]. | (Fla. Laws 1963, 39th sess., gen., ch. 63-391/p. 1048) | 19630612 | ||
| GLADES | 1963-06-12 00:00:00 | GLADES lost small area to HENDRY along Route 80 [not mapped]. | (Fla. Laws 1963, 39th sess., gen., ch. 63-391/p. 1048) | 19630612 | ||
| VOLUSIA | 1967-06-14 00:00:00 | VOLUSIA boundaries were redefined [no change]. | (Fla. Laws 1967, 41st sess., gen., ch. 67-190/p. 389) | 19670614 | ||
| PINELLAS | 1967-08-04 00:00:00 | PINELLAS boundary in the Gulf of Mexico was clarified [no change]. | (Fla. Laws 1967, 41st sess., gen., ch. 67-601/p. 1789) | 19670804 | ||
| POLK | 1968-01-01 00:00:00 | 2000-12-31 00:00:00 | POLK exchanged with OSCEOLA. | (Fla. Laws 1967, 41st sess., gen., ch. 67-592, secs. 1-3/pp. 1728-1730) | 19680101 | 20001231 |
| OSCEOLA | 1968-01-01 00:00:00 | 2000-12-31 00:00:00 | OSCEOLA exchanged with POLK. | (Fla. Laws 1967, 41st sess., gen., ch. 67-592, secs. 1-3/pp. 1728-1730) | 19680101 | 20001231 |
| FRANKLIN | 1972-03-30 00:00:00 | 1986-09-30 00:00:00 | FRANKLIN gained Forbes Island from GULF. | (Fla. Laws 1972, reg. sess., gen., ch. 72-119/p. 388) | 19720330 | 19860930 |
| GULF | 1972-03-30 00:00:00 | 2000-12-31 00:00:00 | GULF lost Forbes Island to FRANKLIN. | (Fla. Laws 1972, reg. sess., gen., ch. 72-119/p. 388) | 19720330 | 20001231 |
| ALACHUA | 1973-12-31 00:00:00 | 2000-12-31 00:00:00 | In 1973, ALACHUA lost to MARION when part of Lake Orange was drained. | (Rand, McNally, 1972, pp. 158-159; Rand, McNally, 1973, pp. 158-159) | 19731231 | 20001231 |
| MARION | 1973-12-31 00:00:00 | 2000-12-31 00:00:00 | In 1973, MARION gained from ALACHUA when part of Lake Orange was drained. | (Rand, McNally, 1972, pp. 158-159; Rand, McNally, 1973, pp. 158-159) | 19731231 | 20001231 |
| DUVAL | 1976-07-01 00:00:00 | 1980-12-30 00:00:00 | DUVAL lost small area to CLAY along Interstate Highway 295. | (Fla. Laws 1976, reg. sess., gen., ch. 76-17/p. 25) | 19760701 | 19801230 |
| CLAY | 1976-07-01 00:00:00 | 1980-12-30 00:00:00 | CLAY gained small area from DUVAL along Interstate Highway 295. | (Fla. Laws 1976, reg. sess., gen., ch. 76-17/p. 25) | 19760701 | 19801230 |
| CLAY | 1978-06-27 00:00:00 | CLAY boundaries were redefined [no change]. | (Fla. Laws 1978, 2d reg. sess., gen., ch. 78-421/p. 1394) | 19780627 | ||
| DADE | 1978-10-01 00:00:00 | DADE (now MIAMI-DADE) lost small area at Golden Beach to BROWARD [change too small to display on interactive map; shapefile users see small_changes 1978_pt. for location]. | (Fla. Laws 1978, 2d reg. sess., gen., ch. 78-119, secs. 1-3/pp. 447-449) | 19781001 | ||
| BROWARD | 1978-10-01 00:00:00 | BROWARD gained small area at Golden Beach from DADE (now MIAMI-DADE) [change too small to display on interactive map; shapefile users see small_changes 1978_pt. for location]. | (Fla. Laws 1978, 2d reg. sess., gen., ch. 78-119, secs. 1-3/pp. 447-449) | 19781001 | ||
| DUVAL | 1980-12-31 00:00:00 | 2000-12-31 00:00:00 | DUVAL lost small area to CLAY along Interstate Highway 295. | (Fla. Laws 1980, reg. sess., gen., ch. 80-9, secs. 1-3/pp. 64-66) | 19801231 | 20001231 |
| CLAY | 1980-12-31 00:00:00 | 1984-06-13 00:00:00 | CLAY gained small area from DUVAL along Interstate Highway 295. | (Fla. Laws 1980, reg. sess., gen., ch. 80-9, secs. 1-3/pp. 64-66) | 19801231 | 19840613 |
| ESCAMBIA | 1983-06-14 00:00:00 | ESCAMBIA boundaries were clarified to extend into the Gulf of Mexico [no change]. | (Fla. Laws 1983, reg. and spec. sess., gen., ch. 83-130/p. 434) | 19830614 | ||
| VOLUSIA | 1983-06-24 00:00:00 | VOLUSIA boundaries were redefined [no change]. | (Fla. Laws 1983, reg. and spec. sess., gen., ch. 83-217, sec. 1/p. 984) | 19830624 | ||
| PUTNAM | 1984-06-14 00:00:00 | 2000-12-31 00:00:00 | PUTNAM lost small area to CLAY. | (Fla. Laws 1984, reg. sess., gen., ch. 84-211, secs. 1-3/pp. 664-666) | 19840614 | 20001231 |
| CLAY | 1984-06-14 00:00:00 | 2000-12-31 00:00:00 | CLAY gained small area from PUTNAM. | (Fla. Laws 1984, reg. sess., gen., ch. 84-211, secs. 1-3/pp. 664-666) | 19840614 | 20001231 |
| FRANKLIN | 1986-10-01 00:00:00 | 2000-12-31 00:00:00 | FRANKLIN lost to WAKULLA when the boundary shifted from the east bank to the middle of the Ochlockonee River and Bay. | (Fla. Laws 1986, reg. sess., gen., ch. 86-288/p. 2109) | 19861001 | 20001231 |
| WAKULLA | 1986-10-01 00:00:00 | 2000-12-31 00:00:00 | WAKULLA gained from FRANKLIN when the boundary shifted from the east bank to the middle of the Ochlockonee River and Bay. | (Fla. Laws 1986, reg. sess., gen., ch. 86-288/p. 2109) | 19861001 | 20001231 |
| SANTA ROSA | 1991-04-27 00:00:00 | 2000-12-31 00:00:00 | SANTA ROSA gained small area from ESCAMBIA on Santa Rosa Island. | (Fla. Laws 1991, 12th leg., ch. 91-310/pp. 2983-2986) | 19910427 | 20001231 |
| ESCAMBIA | 1991-04-27 00:00:00 | 2000-12-31 00:00:00 | ESCAMBIA lost small area to SANTA ROSA on Santa Rosa Island. | (Fla. Laws 1991, 12th leg., ch. 91-310/pp. 2983-2986) | 19910427 | 20001231 |
| INDIAN RIVER | 1991-04-30 00:00:00 | INDIAN RIVER boundaries were clarified [no change]. | (Fla. Laws 1991, 12th leg., ch. 91-39/p. 288) | 19910430 | ||
| CITRUS | 1994-05-29 00:00:00 | CITRUS lost small area to LEVY when the boundary shifted from the north bank to the thread of the Withlacoochee River [not mapped]. | (Fla. Laws 1994, 13th leg., ch. 94-313/pp. 2184-2186) | 19940529 | ||
| LEVY | 1994-05-29 00:00:00 | LEVY gained small area from CITRUS when the boundary shifted from the north bank to the thread of the Withlacoochee River [not mapped]. | (Fla. Laws 1994, 13th leg., ch. 94-313/pp. 2184-2186) | 19940529 | ||
| MIAMI-DADE | 1997-11-13 00:00:00 | 2000-12-31 00:00:00 | DADE renamed MIAMI-DADE. | (Florida Department, Miami-Dade Public Library, telephone conversation, 27 October 2006) | 19971113 | 20001231 |
| NEW RIVER (see BRADFORD) | ||||||
| ST. LUCIE original (see BREVARD) | ||||||
| BENTON (see HERNANDO) | ||||||
| DADE (see MIAMI-DADE) | ||||||
| MOSQUITO (see ORANGE) |
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