Florida: Individual County Chronologies

Florida Atlas of Historical County Boundaries

John H. Long, Editor; Peggy Tuck Sinko, Associate Editor and Historical Compiler; Kathryn Ford Thorne, Historical Compiler; Douglas Knox, Book Digitizing Director; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist and Digital Compiler; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant

Copyright The Newberry Library 2007

ALACHUA

29 Dec 1824
ALACHUA created by Florida Territory from DUVAL and ST. JOHNS. (Fla. Terr. Acts 1824, 3d sess., sec. 6/p. 261)
19 Jan 1828
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)
04 Feb 1832
ALACHUA lost to creation of COLUMBIA. (Fla. Terr. Acts 1832, 10th sess., no. 25, sec. 1/p. 33)
25 Jan 1834
ALACHUA lost to creation of HILLSBOROUGH. (Fla. Terr. Acts 1834, 12th sess., ch. 764/p. 46)
10 Feb 1835
ALACHUA gained from COLUMBIA. (Fla. Terr. Acts 1835, 13th sess., ch. 869/p. 325)
24 Feb 1843
ALACHUA lost to creation of HERNANDO. (Fla. Terr. Acts 1843, 21st sess., no. 51/p. 48)
14 Mar 1844
ALACHUA lost to creation of MARION. (Fla. Terr. Acts 1844, 22d sess., sec. 1/p. 43)
15 Mar 1844
ALACHUA exchanged small areas with COLUMBIA. Boundary between ALACHUA and DUVAL adjusted. (Fla. Terr. Acts 1844, 22d sess., p. 55)
10 Mar 1845
ALACHUA lost to creation of LEVY. (Fla. Terr. Acts 1845, 23d sess., no. 30, sec. 1/p. 54)
13 Jan 1849
ALACHUA lost to creation of PUTNAM. (Fla. Laws 1848, 4th sess., ch. 280, sec. 1/p. 87)
31 Dec 1858
ALACHUA lost to creation of CLAY. (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19)
03 Feb 1870
ALACHUA lost to BRADFORD. (Fla. Laws 1870, 3d sess., ch. 1765/p. 45)
03 Jun 1911
ALACHUA exchanged with LEVY. (Fla. Laws 1911, 13th sess., ch. 6243/p. 215)
07 Jun 1913
ALACHUA lost small area to LEVY. (Fla. Laws 1913, 14th sess., gen., ch. 6509/p. 363)
01 Jan 1926
ALACHUA lost to creation of GILCHRIST. (Fla. Laws 1925, ext. sess., ch. 11371, secs. 1, 19-20/pp. 66, 70; McCarthy, 73)
01 Jan 1954
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)
1973
ALACHUA lost to MARION when part of Lake Orange was drained. (Rand, McNally, 1972, pp. 158-159; Rand, McNally, 1973, pp. 158-159)

BAKER

08 Feb 1861
BAKER created from NEW RIVER (now BRADFORD). (Fla. Laws 1860, 10th sess., ch. 1185/p. 179)
19 May 1911
BAKER gained from DUVAL, lost to NASSAU. (Fla. Laws 1911, 13th sess., ch. 6244/p. 216)

BAY

01 Jul 1913
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)

BENTON (see HERNANDO)

BLOXHAM (proposed)

01 Jun 1915
Legislature authorized the creation of BLOXHAM 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")

BRADFORD

Feb 1859
NEW RIVER (now BRADFORD) was created from COLUMBIA. (Fla. Laws 1858, 9th sess., ch. 895, secs. 1-4/p. 37)
08 Feb 1861
NEW RIVER (now BRADFORD) lost to creation of BAKER. (Fla. Laws 1860, 10th sess., ch. 1185/p. 179)
06 Dec 1861
NEW RIVER renamed BRADFORD. (Fla. Laws 1861, 11th sess., ch. 1300/p. 53)
03 Feb 1870
BRADFORD gained from ALACHUA. (Fla. Laws 1870, 3d sess., ch. 1765/p. 45)
01 Oct 1921
BRADFORD lost to creation of UNION. (Fla. Laws 1921, 18th sess., gen., ch. 8516, secs. 1, 27/pp. 301, 307)
06 Jun 1927
BRADFORD lost small area to PUTNAM. (Fla. Laws 1927, 21st sess., gen., ch. 12489, sec. 1/p. 1585)
01 Jan 1954
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)

BREVARD

14 Mar 1844
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)
27 Feb 1845
ST. LUCIE (original, now BREVARD) lost to ORANGE. (Fla. Terr. Acts 1845, 23d sess., no. 35/p. 58)
28 Dec 1846
ST. LUCIE (original, now BREVARD) gained from ORANGE. (Fla. Laws 1846, 2d sess., ch. 105/p. 62)
10 Jan 1849
ST. LUCIE (original, now BREVARD) exchanged with ORANGE. (Fla. Laws 1848, 4th sess., ch. 290/p. 97)
06 Jan 1855
ST. LUCIE (original) renamed BREVARD. (Fla. Laws 1854, 7th sess., ch. 651/p. 61)
13 Jan 1859
BREVARD exchanged with MANATEE. (Fla. Laws 1858, 9th sess., ch. 922/p. 56)
08 Feb 1861
BREVARD lost to creation of POLK. (Fla. Laws 1860, 10th sess., ch. 1201/p. 192; Fla. Rpts., 120:429-431)
06 Dec 1866
BREVARD lost to ORANGE. (Fla. Laws 1866, 14th sess., ch. 1621/p. 82)
08 Dec 1866
BREVARD lost to DADE (now MIAMI-DADE). (Fla. Laws 1866, 14th sess., ch. 1592/p. 62)
18 Feb 1873
BREVARD gained from ORANGE. (Fla. Laws 1873, 6th sess., ch. 1964/p. 36)
19 Feb 1874
BREVARD lost to DADE (now MIAMI-DADE), MANATEE, and ORANGE. (Fla. Laws 1874, 7th sess., ch. 1998/p. 63)
11 Mar 1879
BREVARD gained from VOLUSIA. (Fla. Laws 1879, 10th sess., ch. 3175/p. 140)
11 Jul 1887
BREVARD lost to creation of OSCEOLA, gained small area from ORANGE. (Fla. Laws 1887, 1st sess., ch. 3768/p. 148)
01 Jul 1905
BREVARD lost to creation of ST. LUCIE. (Fla. Laws 1905, 10th sess., ch. 5567, secs. 1, 22/pp. 404, 408)
03 Nov 1959
BREVARD lost small area south of Sebastian Inlet to INDIAN RIVER. (Fla. Laws 1959, 37th sess., gen., ch. 59-486/p. 1626)

British East Florida

07 Oct 1763
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)
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)

British West Florida

07 Oct 1763
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)
Jul 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)
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)

BROWARD (proposed)

06 Jun 1913
Legislature authorized creation of BROWARD 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)

BROWARD

01 Oct 1915
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)
01 Oct 1978
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)

CALHOUN

26 Jan 1838
CALHOUN created by Florida Territory from FRANKLIN, JACKSON, and WASHINGTON. (Fla. Terr. Acts 1838, 16th sess., no. 8, sec. 1/p. 9)
25 Feb 1840
CALHOUN exchanged with WASHINGTON. (Fla. Terr. Acts 1840, 18th sess., no. 21/p. 23)
10 Mar 1845
CALHOUN gained from JACKSON. (Fla. Terr. Acts 1845, 23d sess., no. 29/p. 53)
14 Feb 1873
CALHOUN lost to JACKSON and WASHINGTON. (Fla. Laws 1873, 6th sess., chs. 1950, 1954/pp. 27-28)
Feb 1875
CALHOUN gained from JACKSON. (Fla. Laws 1875, 8th sess., ch. 2061/p. 67)
31 May 1897
CALHOUN exchanged with JACKSON. (Fla. Laws 1897, 6th sess., ch. 4576/p. 119)
04 Jun 1897
CALHOUN exchanged with WASHINGTON. (Fla. Laws 1897, 6th sess., ch. 4577/p. 119)
01 Jul 1913
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)
07 Jul 1925
CALHOUN lost to creation of GULF. (Fla. Laws 1925, 20th sess., gen., ch. 10132, secs. 1, 25-26/pp. 237, 244)

CHARLOTTE

23 Apr 1921
CHARLOTTE created from DE SOTO. (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281)

CITRUS

02 Jun 1887
CITRUS created from HERNANDO. (Fla. Laws 1887, 1st sess., ch. 3772, secs. 1, 8/pp. 157-159)
02 Jun 1911
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)
29 May 1994
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)

CLAY

31 Dec 1858
CLAY created from ALACHUA, COLUMBIA, and DUVAL. (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19)
15 Jan 1859
CLAY lost to PUTNAM. (Fla. Laws 1858, 9th sess., ch. 923/p. 57)
22 Dec 1859
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)
26 Feb 1883
CLAY gained from PUTNAM. (Fla. Laws 1883, 12th sess., ch. 3469/p. 79)
05 May 1909
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)
06 Jun 1927
CLAY lost small area to PUTNAM. (Fla. Laws 1927, 21st sess., gen., ch. 12489, sec. 1/p. 1585)
01 Jul 1976
CLAY gained small area from DUVAL along Interstate Highway 295. (Fla. Laws 1976, reg. sess., gen., ch. 76-17/p. 25)
27 Jun 1978
CLAY boundaries were redefined [no change]. (Fla. Laws 1978, 2d reg. sess., gen., ch. 78-421/p. 1394)
31 Dec 1980
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)
14 Jun 1984
CLAY gained small area from PUTNAM. (Fla. Laws 1984, reg. sess., gen., ch. 84-211, secs. 1-3/pp. 664-666)

COLLIER

07 Jul 1923
COLLIER created from LEE. (Fla. Laws 1923, 19th sess., gen., ch. 9362, secs. 1, 26/pp. 468, 476)

COLUMBIA

04 Feb 1832
COLUMBIA created by Florida Territory from ALACHUA. (Fla. Terr. Acts 1832, 10th sess., no. 25, sec. 1/p. 33)
10 Feb 1835
COLUMBIA lost to ALACHUA. (Fla. Terr. Acts 1835, 13th sess., ch. 869/p. 325)
15 Mar 1844
COLUMBIA exchanged small areas with ALACHUA, lost to DUVAL. (Fla. Terr. Acts 1844, 22d sess., p. 55)
31 Dec 1858
COLUMBIA lost to creation of CLAY. (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19)
Feb 1859
COLUMBIA lost to creation of NEW RIVER (now BRADFORD) and SUWANNEE. (Fla. Laws 1858, 9th sess., ch. 895, secs. 1-4/p. 37)
12 Dec 1859
COLUMBIA gained from SUWANNEE. (Fla. Laws 1859, adj. sess., ch. 1048/p. 69)
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)
30 May 1889
COLUMBIA exchanged with SUWANNEE. (Fla. Laws 1889, ext. sess., ch. 3948/p. 181)
29 May 1909
COLUMBIA boundaries were clarified [no change]. (Fla. Laws 1909, 12th sess., ch. 5979/p. 184)
01 Jan 1954
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)

DADE (see MIAMI-DADE)

DE SOTO

19 May 1887
DE SOTO created from MANATEE. (Fla. Laws 1887, 1st sess., ch. 3770, secs. 1-3/pp. 151-152)
23 Apr 1921
DE SOTO lost to creation of CHARLOTTE, GLADES, HARDEE, and HIGHLANDS. (Fla. Laws 1921, 18th sess., gen., ch. 8513, pp. 279-281)

Disputed Area

26 Mar 1804
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)
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)

DIXIE

25 Apr 1921
DIXIE created from LAFAYETTE. (Fla. Laws 1921, 18th sess., gen., ch. 8514, sec. 1/p. 289)
04 Jun 1925
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)

DUVAL

12 Aug 1822
DUVAL created by Florida Territory from ST. JOHNS. (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3)
24 Jun 1823
DUVAL gained from JACKSON, exchanged with ST. JOHNS. (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8)
29 Dec 1824
DUVAL gained from ST. JOHNS, lost to creation of ALACHUA, LEON, and NASSAU. (Fla. Terr. Acts 1824, 3d sess., sec. 8/p. 262)
30 Dec 1826
DUVAL lost to NASSAU. (Fla. Terr. Acts 1826, 5th sess., p. 158)
23 Nov 1828
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)
15 Mar 1844
DUVAL gained from COLUMBIA; boundary with ALACHUA adjusted. (Fla. Terr. Acts 1844, 22d sess., p. 55)
02 Jan 1857
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)
31 Dec 1858
DUVAL lost to creation of CLAY. (Fla. Laws 1858, 9th sess., ch. 866, secs. 1-2/p. 19)
15 Jan 1859
DUVAL gained from NASSAU. (Fla. Laws 1858, 9th sess., ch. 920/p. 55)
22 Dec 1859
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)
15 Feb 1875
DUVAL exchanged with ST. JOHNS. (Fla. Laws 1875, 8th sess., ch. 2068/p. 70)
19 May 1911
DUVAL lost to BAKER. (Fla. Laws 1911, 13th sess., ch. 6244/p. 216)
01 Jul 1976
DUVAL lost small area to CLAY along Interstate Highway 295. (Fla. Laws 1976, reg. sess., gen., ch. 76-17/p. 25)
31 Dec 1980
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)

ESCAMBIA

21 Jul 1821
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)
12 Aug 1822
ESCAMBIA lost to creation of JACKSON. (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3)
29 Dec 1824
ESCAMBIA lost to JACKSON and to creation of WALTON. (Fla. Terr. Acts 1824, 3d sess., secs. 2, 7, 9/pp. 260-262)
09 Dec 1825
ESCAMBIA lost to WALTON. (Fla. Terr. Acts 1825, 4th sess., p. 35)
18 Feb 1842
ESCAMBIA lost to creation of SANTA ROSA. (Fla. Terr. Acts 1842, 20th sess., no. 1, sec. 1/p. 3)
11 Jan 1851
ESCAMBIA lost part of Santa Rosa Island to WALTON. (Fla. Laws 1850, 5th sess., ch. 411/p. 146)
31 May 1947
ESCAMBIA lost to OKALOOSA on Santa Rosa Island. (Fla. Laws 1947, 31st sess., gen., ch. 23867/p. 483)
11 Jun 1951
ESCAMBIA lost small area to SANTA ROSA on Santa Rosa Island. (Fla. Laws 1951, 33d sess., gen., ch. 26860/p. 742)
29 Jun 1957
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)
14 Jun 1983
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)
27 Apr 1991
ESCAMBIA lost small area to SANTA ROSA on Santa Rosa Island. (Fla. Laws 1991, 12th leg., ch. 91-310/pp. 2983-2986)

FAYETTE (extinct)

09 Feb 1832
FAYETTE (extinct) created by Florida Territory from JACKSON. (Fla. Terr. Acts 1832, 10th sess., no. 53/p. 58)
16 Feb 1833
FAYETTE (extinct) gained from WASHINGTON, lost to JACKSON. (Fla. Terr. Acts 1833, 11th sess., ch. 688/p. 53)
01 Feb 1834
FAYETTE lost all territory to JACKSON; FAYETTE eliminated. (Fla. Terr. Acts 1834, 12th sess., ch. 765/p. 47)

FLAGLER

12 Jun 1917
FLAGLER created from ST. JOHNS and VOLUSIA. (Fla. Laws 1917, 16th sess., gen., ch. 7399, secs. 1, 22-23/pp. 277, 284)
20 Jun 1959
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)

FRANKLIN

08 Feb 1832
FRANKLIN created by Florida Territory from GADSDEN and WASHINGTON. (Fla. Terr. Acts 1832, 10th sess., no. 42/p. 44)
26 Jan 1838
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)
13 Jan 1851
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)
16 Feb 1885
FRANKLIN gained a narrow strip of territory all along its boundary with LIBERTY. (Fla. Laws 1885, 13th sess., ch. 3624/p. 63)
30 Mar 1972
FRANKLIN gained Forbes Island from GULF. (Fla. Laws 1972, reg. sess., gen., ch. 72-119/p. 388)
01 Oct 1986
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)

GADSDEN

24 Jun 1823
GADSDEN created by Florida Territory from JACKSON. (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8)
29 Dec 1824
GADSDEN lost to creation of LEON. (Fla. Terr. Acts 1824, 3d sess., sec. 5/p. 261)
08 Feb 1832
GADSDEN lost to creation of FRANKLIN. (Fla. Terr. Acts 1832, 10th sess., no. 42/p. 44)
13 Jan 1851
GADSDEN exchanged with FRANKLIN. (Fla. Laws 1850, 5th sess., chs. 412, 413/p. 147)
15 Dec 1855
GADSDEN lost to creation of LIBERTY [mistake in description corrected 5 January 1859]. (Fla. Laws 1855, adj. sess., ch. 771/p. 50)
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)
22 Dec 1859
GADSDEN exchanged with LIBERTY. (Fla. Laws 1859, adj. sess., ch. 1046/p. 68)
01 Jan 1910
GADSDEN exchanged with LIBERTY. (Fla. Laws 1909, 12th sess., ch. 5966, secs. 1-2, 4/pp. 169-171)
04 May 1933
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)

GILCHRIST

01 Jan 1926
GILCHRIST created from ALACHUA. (Fla. Laws 1925, ext. sess., ch. 11371, secs. 1, 19-20/pp. 66, 70; McCarthy, 73)

GLADES

23 Apr 1921
GLADES created from DE SOTO. (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281)
08 May 1925
GLADES gained part of Lake Okeechobee from PALM BEACH. (Fla. Laws 1925, 20th sess., spec., ch. 10596/p. 1860)
07 Sep 1937
GLADES lost small area to HENDRY. (Fla. Laws 1937, 26th sess., spec., ch. 18568, secs. 1, 6/pp. 535, 537)
13 Jun 1949
GLADES gained small area from HIGHLANDS. (Fla. Laws 1949, 32d sess., gen., ch. 25612, sec. 1/p. 1342)
29 May 1963
GLADES gained part of Lake Okeechobee from PALM BEACH. (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454)
12 Jun 1963
GLADES lost small area to HENDRY along Route 80 [not mapped]. (Fla. Laws 1963, 39th sess., gen., ch. 63-391/p. 1048)

GULF

07 Jul 1925
GULF created from CALHOUN. (Fla. Laws 1925, 20th sess., gen., ch. 10132, secs. 1, 25-26/pp. 237, 244)
30 Mar 1972
GULF lost Forbes Island to FRANKLIN. (Fla. Laws 1972, reg. sess., gen., ch. 72-119/p. 388)

HAMILTON

26 Dec 1827
HAMILTON created by Florida Territory from JEFFERSON. (Fla. Terr. Acts 1827, 6th sess., p. 8)

HARDEE

23 Apr 1921
HARDEE created from DE SOTO. (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281)

HENDRY

10 Jul 1923
HENDRY created from LEE. (Fla. Laws 1923, 19th sess., gen., ch. 9360, secs. 1, 26/pp. 459, 467)
14 May 1925
HENDRY gained a small part of Lake Okeechobee from PALM BEACH. (Fla. Laws 1925, 20th sess., gen., ch. 10090/p. 112)
07 Sep 1937
HENDRY gained small area from GLADES. (Fla. Laws 1937, 26th sess., spec., ch. 18568, secs. 1, 6/pp. 535, 537)
29 Jul 1942
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)
11 Jun 1945
HENDRY boundaries were clarified, correcting mistake of 29 July 1942 [no change]. (Fla. Laws 1945, 30th sess., gen., ch. 22858, sec. 7/p. 862)
29 May 1963
HENDRY gained part of Lake Okeechobee from PALM BEACH. (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454)
12 Jun 1963
HENDRY gained small area from GLADES along Route 80 [not mapped]. (Fla. Laws 1963, 39th sess., gen., ch. 63-391/p. 1048)

HERNANDO

24 Feb 1843
HERNANDO created by Florida Territory from ALACHUA and HILLSBOROUGH. (Fla. Terr. Acts 1843, 21st sess., no. 51/p. 48)
06 Mar 1844
HERNANDO renamed BENTON; BENTON gained from HILLSBOROUGH. (Fla. Terr. Acts 1844, 22d sess., p. 16)
01 Jan 1847
BENTON (now HERNANDO) lost to HILLSBOROUGH. (Fla. Laws 1846, 2d sess., ch. 107/p. 63)
24 Dec 1850
BENTON renamed HERNANDO. (Fla. Laws 1850, 5th sess., ch. 415/p. 148)
by 1880
HERNANDO gained from POLK. (Rand, McNally, 1880, 254-255)
05 Mar 1883
HERNANDO lost small area to POLK. (Fla. Laws 1883, 12th sess., ch. 3471/p. 80)
02 Jun 1887
HERNANDO lost to creation of CITRUS and PASCO. (Fla. Laws 1887, 1st sess., ch. 3772, secs. 1, 8/pp. 157-159)

HIGHLANDS

23 Apr 1921
HIGHLANDS created from DE SOTO. (Fla. Laws 1921, 18th sess., gen., ch. 8513, sec. 1/pp. 279-281)
13 Jun 1949
HIGHLANDS lost small area to GLADES. (Fla. Laws 1949, 32d sess., gen., ch. 25612, sec. 1/p. 1342)

HILLSBOROUGH

25 Jan 1834
HILLSBOROUGH created by Florida Territory from ALACHUA and former Indian lands (non-county area). (Fla. Terr. Acts 1834, 12th sess., ch. 764/p. 46)
24 Feb 1843
HILLSBOROUGH lost to creation of HERNANDO. (Fla. Terr. Acts 1843, 21st sess., no. 51/p. 48)
06 Mar 1844
HILLSBOROUGH lost to BENTON (now HERNANDO). (Fla. Terr. Acts 1844, 22d sess., p. 16)
14 Mar 1844
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)
01 Jan 1847
HILLSBOROUGH gained from BENTON (now HERNANDO). (Fla. Laws 1846, 2d sess., ch. 107/p. 63)
09 Jan 1855
HILLSBOROUGH lost to creation of MANATEE. (Fla. Laws 1854, 7th sess., ch. 628/p. 47)
08 Feb 1861
HILLSBOROUGH lost to creation of POLK. (Fla. Laws 1860, 10th sess., ch. 1201/p. 192; Fla. Rpts., 120:429-431)
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)
13 Dec 1866
HILLSBOROUGH lost to SUMTER. (Fla. Laws 1866, 14th sess., ch. 1589/p. 61)
19 Feb 1874
HILLSBOROUGH lost to POLK. (Fla. Laws 1874, 7th sess., ch. 1998/p. 63)
14 Nov 1911
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)
15 May 1939
HILLSBOROUGH lost small area (Mullet Key) to PINELLAS. (Fla. Laws 1939, 27th sess., gen., ch. 19058/p. 116)

HOLMES

08 Jan 1848
HOLMES created from JACKSON and WALTON. (Fla. Laws 1847, 3d sess., ch. 176, sec. 1/p. 45)
08 Aug 1915
HOLMES gained from WASHINGTON. (Fla. Laws 1915, 15th sess., gen., ch. 6935, secs. 1-2, 16/pp. 292-293, 297)

Indian Lands

29 Dec 1824
Part of ST. JOHNS reverted to non-county area (Indian Lands). (Fla. Terr. Acts 1824, 3d sess., secs. 6, 10/pp. 261-262)
19 Jan 1828
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)
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)

INDIAN RIVER

29 Jun 1925
INDIAN RIVER created from ST. LUCIE. (Fla. Laws 1925, 20th sess., gen., ch. 10148, sec. 1/p. 294)
03 Nov 1959
INDIAN RIVER gained small area south of Sebastian Inlet from BREVARD. (Fla. Laws 1959, 37th sess., gen., ch. 59-486/p. 1626)
30 Apr 1991
INDIAN RIVER boundaries clarified [no change]. (Fla. Laws 1991, 12th leg., ch. 91-39/p. 288)

JACKSON

12 Aug 1822
JACKSON created by Florida Territory from ESCAMBIA. (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3)
24 Jun 1823
JACKSON lost to DUVAL and lost to creation of GADSDEN. (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8)
29 Dec 1824
JACKSON gained from ESCAMBIA, lost to creation of WALTON. (Fla. Terr. Acts 1824, 3d sess., secs. 2, 7, 9/pp. 260-262)
09 Dec 1825
JACKSON exchanged with WALTON, lost to creation of WASHINGTON. (Fla. Terr. Acts 1825, 4th sess., p. 35)
12 Jan 1827
JACKSON exchanged with WASHINGTON. (Fla. Terr. Acts 1826, 5th sess., p. 108)
29 Oct 1828
JACKSON exchanged with WASHINGTON. (Fla. Terr. Acts 1828, 7th sess., p. 6)
09 Feb 1832
JACKSON lost to creation of FAYETTE (extinct). (Fla. Terr. Acts 1832, 10th sess., no. 53/p. 58)
11 Feb 1832
JACKSON exchanged with WASHINGTON. (Fla. Terr. Acts 1832, 10th sess., no. 72/p. 113)
16 Feb 1833
JACKSON gained from FAYETTE (extinct) and WASHINGTON. (Fla. Terr. Acts 1833, 11th sess., chs. 687-688/pp. 52-53)
01 Feb 1834
JACKSON gained all of FAYETTE; FAYETTE eliminated. (Fla. Terr. Acts 1834, 12th sess., ch. 765/p. 47)
26 Jan 1838
JACKSON lost to creation of CALHOUN. (Fla. Terr. Acts 1838, 16th sess., no. 8, sec. 1/p. 9)
10 Mar 1845
JACKSON lost to CALHOUN. (Fla. Terr. Acts 1845, 23d sess., no. 29/p. 53)
04 Jan 1847
JACKSON lost to WASHINGTON. (Fla. Laws 1846, 2d sess., ch. 108/p. 64)
28 Dec 1847
JACKSON exchanged with WASHINGTON. (Fla. Laws 1847, 3d sess., ch. 180/p. 49)
08 Jan 1848
JACKSON lost to creation of HOLMES. (Fla. Laws 1847, 3d sess., ch. 176, sec. 1/p. 45)
14 Feb 1873
JACKSON gained from CALHOUN. (Fla. Laws 1873, 6th sess., ch. 1954/p. 28)
Feb 1875
JACKSON lost to CALHOUN. (Fla. Laws 1875, 8th sess., ch. 2061/p. 67)
31 May 1897
JACKSON exchanged with CALHOUN. (Fla. Laws 1897, 6th sess., ch. 4576/p. 119)
08 Aug 1915
JACKSON lost to WASHINGTON. (Fla. Laws 1915, 15th sess., gen., ch. 6935, secs. 1-2, 16/pp. 292-293, 297)

JEFFERSON

20 Jan 1827
JEFFERSON created by Florida Territory from LEON. (Fla. Terr. Acts 1826, 5th sess., p. 151)
26 Dec 1827
JEFFERSON lost to creation of HAMILTON and MADISON. (Fla. Terr. Acts 1827, 6th sess., p. 8)
19 Jan 1828
JEFFERSON lost to LEON. (Fla. Terr. Acts 1827, 6th sess., p. 170)
14 Nov 1829
JEFFERSON gained from LEON. (Fla. Terr. Acts 1829, 8th sess., p. 37)
13 Feb 1831
JEFFERSON lost to LEON. (Fla. Terr. Acts 1831, 9th sess., p. 31)
30 Jan 1832
JEFFERSON gained from LEON. (Fla. Terr. Acts 1832, 10th sess., no. 11/p. 10)
09 Feb 1833
JEFFERSON lost to MADISON. (Fla. Terr. Acts 1833, 11th sess., ch. 686/p. 52)
22 Feb 1843
JEFFERSON gained from MADISON. (Fla. Terr. Acts 1843, 21st sess., no. 48/p. 47)
05 Feb 1844
JEFFERSON lost to MADISON. (Fla. Terr. Acts 1844, 22d sess., p. 1)
11 Mar 1879
JEFFERSON lost to LEON. (Fla. Laws 1879, 10th sess., ch. 3176/p. 140)
07 Feb 1881
JEFFERSON gained from LEON. (Fla. Laws 1881, 11th sess., ch. 3304/p. 101)
May 1923
JEFFERSON exchanged with MADISON. (Fla. Laws 1923, 19th sess., gen., ch. 9361/p. 467)

LAFAYETTE

23 Dec 1856
LAFAYETTE created from MADISON. (Fla. Laws 1856, 8th sess., ch. 806, secs. 1-3/p. 48)
21 Dec 1858
LAFAYETTE gained from TAYLOR. (Fla. Laws 1858, 9th sess., ch. 921/p. 55)
13 Feb 1877
LAFAYETTE lost to TAYLOR. (Fla. Laws 1877, 9th sess., ch. 3061/p. 121)
31 Jan 1883
LAFAYETTE gained from TAYLOR [mistake in description corrected 12 February 1885]. (Fla. Laws 1883, 12th sess., ch. 3470/p. 79)
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)
28 May 1887
LAFAYETTE lost to TAYLOR. (Fla. Laws 1887, 1st sess., ch. 3766/p. 147)
24 May 1911
LAFAYETTE gained from TAYLOR. (Fla. Laws 1911, 13th sess., ch. 6246/p. 218)
25 Apr 1921
LAFAYETTE lost to creation of DIXIE. (Fla. Laws 1921, 18th sess., gen., ch. 8514, sec. 1/p. 289)

LAKE

26 Jul 1887
LAKE created from ORANGE and SUMTER. (Fla. Laws 1887, 1st sess., ch. 3771, secs. 1-2/pp. 154-155)
31 May 1889
LAKE gained small area from ORANGE. (Fla. Laws 1889, ext. sess., ch. 3944/p. 176)
10 Jun 1891
LAKE lost small area to POLK. (Fla. Laws 1891, 3d sess., ch. 4066/p. 108)

LEE

13 May 1887
LEE created from MONROE. (Fla. Laws 1887, 1st sess., ch. 3769/p. 150)
07 Jul 1923
LEE lost to creation of COLLIER. (Fla. Laws 1923, 19th sess., gen., ch. 9362, secs. 1, 26/pp. 468, 476)
10 Jul 1923
LEE lost to creation of HENDRY. (Fla. Laws 1923, 19th sess., gen., ch. 9360, secs. 1, 26/pp. 459, 467)

LEON

29 Dec 1824
LEON created by Florida Territory from DUVAL and GADSDEN. (Fla. Terr. Acts 1824, 3d sess., sec. 5/p. 261)
20 Jan 1827
LEON lost to creation of JEFFERSON. (Fla. Terr. Acts 1826, 5th sess., p. 151)
19 Jan 1828
LEON gained from JEFFERSON. (Fla. Terr. Acts 1827, 6th sess., p. 170)
14 Nov 1829
LEON lost to JEFFERSON. (Fla. Terr. Acts 1829, 8th sess., p. 37)
13 Feb 1831
LEON gained from JEFFERSON. (Fla. Terr. Acts 1831, 9th sess., p. 31)
30 Jan 1832
LEON lost to JEFFERSON. (Fla. Terr. Acts 1832, 10th sess., no. 11/p. 10)
11 Mar 1843
LEON lost to creation of WAKULLA. (Fla. Terr. Acts 1843, 21st sess., no. 25/p. 29 and no. 30/p. 33)
06 Jan 1849
LEON lost to WAKULLA. (Fla. Laws 1848, 4th sess., ch. 288/p. 96)
22 Jan 1851
LEON lost to WAKULLA. (Fla. Laws 1850, 5th sess., ch. 414/p. 148)
11 Mar 1879
LEON gained from JEFFERSON. (Fla. Laws 1879, 10th sess., ch. 3176/p. 140)
07 Feb 1881
LEON lost to JEFFERSON. (Fla. Laws 1881, 11th sess., ch. 3304/p. 101)
04 May 1933
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)

LEVY

10 Mar 1845
LEVY created from ALACHUA. (Fla. Terr. Acts 1845, 23d sess., no. 30, sec. 1/p. 54)
06 Feb 1877
LEVY gained from MARION. (Fla. Laws 1877, 9th sess., ch. 3060/p. 120)
03 Jun 1911
LEVY exchanged with ALACHUA. (Fla. Laws 1911, 13th sess., ch. 6243/p. 215)
07 Jun 1913
LEVY gained small area from ALACHUA. (Fla. Laws 1913, 14th sess., gen., ch. 6509/p. 363)
01 Jun 1915
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")
04 Jun 1925
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)
29 May 1994
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)

LIBERTY

15 Dec 1855
LIBERTY created from GADSDEN [mistake in description corrected 5 January 1859]. (Fla. Laws 1855, adj. sess., ch. 771/p. 50)
05 Jan 1859
LIBERTY boundaries were clarified, correcting mistake of 15 December 1855 [no change]. (Fla. Laws 1858, 9th sess., ch. 949/p. 120)
22 Dec 1859
LIBERTY exchanged with GADSDEN. (Fla. Laws 1859, adj. sess., ch. 1046/p. 68)
16 Feb 1885
LIBERTY lost a narrow strip of territory all along its boundary with FRANKLIN. (Fla. Laws 1885, 13th sess., ch. 3624/p. 63)
01 Jan 1910
LIBERTY exchanged with GADSDEN. (Fla. Laws 1909, 12th sess., ch. 5966, secs. 1-2, 4/pp. 169-171)

MADISON

26 Dec 1827
MADISON created by Florida Territory from JEFFERSON. (Fla. Terr. Acts 1827, 6th sess., p. 8)
09 Feb 1833
MADISON gained from JEFFERSON. (Fla. Terr. Acts 1833, 11th sess., ch. 686/p. 52)
22 Feb 1843
MADISON lost to JEFFERSON. (Fla. Terr. Acts 1843, 21st sess., no. 48/p. 47)
05 Feb 1844
MADISON gained from JEFFERSON. (Fla. Terr. Acts 1844, 22d sess., p. 1)
23 Dec 1856
MADISON lost to creation of LAFAYETTE and TAYLOR. (Fla. Laws 1856, 8th sess., ch. 806, secs. 1-3/p. 48)
May 1923
MADISON exchanged with JEFFERSON. (Fla. Laws 1923, 19th sess., gen., ch. 9361/p. 467)

MANATEE

09 Jan 1855
MANATEE created from HILLSBOROUGH. (Fla. Laws 1854, 7th sess., ch. 628/p. 47)
13 Jan 1859
MANATEE gained from MONROE, exchanged with BREVARD. (Fla. Laws 1858, 9th sess., ch. 922/p. 56)
19 Feb 1874
MANATEE gained from BREVARD, exchanged with MONROE. (Fla. Laws 1874, 7th sess., ch. 1998/p. 63)
21 Feb 1877
MANATEE exchanged with MONROE. (Fla. Laws 1877, 9th sess., ch. 3062/p. 121)
19 May 1887
MANATEE lost to creation of DE SOTO. (Fla. Laws 1887, 1st sess., ch. 3770, secs. 1-3/pp. 151-152)
15 Jun 1921
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)

MARION

14 Mar 1844
MARION created by Florida Territory from ALACHUA, HILLSBOROUGH, MOSQUITO (now ORANGE), and ST. JOHNS. (Fla. Terr. Acts 1844, 22d sess., sec. 1/p. 43)
25 Dec 1846
MARION lost to ORANGE and ST. JOHNS along the St. Johns River and Lake George. (Fla. Laws 1846, 2d sess., ch. 106/p. 63)
30 Dec 1848
MARION lost to ST. JOHNS. (Fla. Laws 1848, 4th sess., ch. 289/p. 96)
08 Jan 1853
MARION lost to creation of SUMTER. (Fla. Laws 1852, 6th sess., ch. 548, sec. 1/p. 124)
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)
06 Feb 1877
MARION lost to LEVY. (Fla. Laws 1877, 9th sess., ch. 3060/p. 120)
28 May 1887
MARION exchanged with PUTNAM. (Fla. Laws 1887, 1st sess., ch. 3767/p. 147)
01 Jun 1915
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")
1973
MARION gained from ALACHUA when part of Lake Orange was drained. (Rand, McNally, 1972, pp. 158-159; Rand, McNally, 1973, pp. 158-159)

MARTIN

04 Aug 1925
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)
29 May 1963
MARTIN gained part of Lake Okeechobee from PALM BEACH. (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454)

MIAMI-DADE

04 Feb 1836
DADE (now MIAMI-DADE) created by Florida Territory from MONROE. (Fla. Terr. Acts 1836, 14th sess., ch. 937/p. 19)
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)
08 Dec 1866
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)
1872
DADE (now MIAMI-DADE) was fully organized, detached from MONROE. (Hudson, 18-21)
19 Feb 1874
DADE (now MIAMI-DADE) gained from BREVARD, lost to MONROE. (Fla. Laws 1874, 7th sess., ch. 1998/p. 63)
01 Jul 1909
DADE (now MIAMI-DADE) lost to creation of PALM BEACH. (Fla. Laws 1909, 12th sess., ch. 5970, sec. 1/p. 174)
06 Jun 1913
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)
01 Oct 1915
DADE (now MIAMI-DADE) lost to creation of BROWARD. (Fla. Laws 1915, 15th sess., gen., ch. 6934, secs. 1, 23/pp. 285, 292)
13 May 1961
DADE (now MIAMI-DADE) gained small area on Barnes Sound from MONROE. (Fla. Laws 1961, 38th sess., gen., ch. 61-16/p. 44)
01 Oct 1978
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)
13 Nov 1997
DADE renamed MIAMI-DADE. (Florida Department, Miami-Dade Public Library, telephone conversation, 27 October 2006)

MONROE

03 Jul 1823
MONROE created by Florida Territory from ST. JOHNS. (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 122)
04 Feb 1836
MONROE lost to creation of DADE (now MIAMI-DADE). (Fla. Terr. Acts 1836, 14th sess., ch. 937/p. 19)
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)
13 Jan 1859
MONROE lost to MANATEE. (Fla. Laws 1858, 9th sess., ch. 922/p. 56)
08 Dec 1866
MONROE exchanged with DADE (now MIAMI-DADE) [MONROE gained in the Florida Keys]. (Fla. Laws 1866, 14th sess., ch. 1592/p. 62)
1872
DADE (now MIAMI-DADE) was fully organized, detached from MONROE. (Hudson, 18-21)
19 Feb 1874
MONROE gained from DADE (now MIAMI-DADE), exchanged with MANATEE. (Fla. Laws 1874, 7th sess., ch. 1998/p. 63)
21 Feb 1877
MONROE exchanged with MANATEE. (Fla. Laws 1877, 9th sess., ch. 3062/p. 121)
13 May 1887
MONROE lost to creation of LEE. (Fla. Laws 1887, 1st sess., ch. 3769/p. 150)
13 May 1961
MONROE lost small area on Barnes Sound to DADE (now MIAMI-DADE). (Fla. Laws 1961, 38th sess., gen., ch. 61-16/p. 44)

MOSQUITO (see ORANGE)

NASSAU

29 Dec 1824
NASSAU created by Florida Territory from DUVAL. (Fla. Terr. Acts 1824, 3d sess., sec. 8/p. 262)
30 Dec 1826
NASSAU gained from DUVAL. (Fla. Terr. Acts 1826, 5th sess., p. 158)
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)
02 Jan 1857
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)
15 Jan 1859
NASSAU lost to DUVAL. (Fla. Laws 1858, 9th sess., ch. 920/p. 55)
19 May 1911
NASSAU gained from BAKER. (Fla. Laws 1911, 13th sess., ch. 6244/p. 216)

NEW RIVER (see BRADFORD)

OKALOOSA

07 Sep 1915
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)
31 May 1947
OKALOOSA gained from ESCAMBIA on Santa Rosa Island. (Fla. Laws 1947, 31st sess., gen., ch. 23867/p. 483)

OKEECHOBEE

07 Aug 1917
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)
29 May 1963
OKEECHOBEE gained part of Lake Okeechobee from PALM BEACH. (Fla. Laws 1963, 39th sess., gen., ch. 63-200, secs. 1-5/pp. 451-454)

ORANGE

29 Dec 1824
MOSQUITO (now ORANGE) created by Florida Territory from ST. JOHNS. (Fla. Terr. Acts 1824, 3d sess., sec. 10/p. 262)
19 Jan 1828
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)
14 Mar 1844
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)
30 Jan 1845
MOSQUITO renamed ORANGE. (Fla. Terr. Acts 1845, 23d sess., no. 31/p. 56)
27 Feb 1845
ORANGE gained from ST. LUCIE (original, now BREVARD). (Fla. Terr. Acts 1845, 23d sess., no. 35/p. 58)
25 Dec 1846
ORANGE gained small area from MARION along Lake George. (Fla. Laws 1846, 2d sess., ch. 106/p. 63)
28 Dec 1846
ORANGE lost to ST. LUCIE (original, now BREVARD). (Fla. Laws 1846, 2d sess., ch. 105/p. 62)
10 Jan 1849
ORANGE exchanged with ST. LUCIE (original, now BREVARD). (Fla. Laws 1848, 4th sess., ch. 290/p. 97)
29 Dec 1854
ORANGE lost to creation of VOLUSIA. (Fla. Laws 1854, 7th sess., ch. 624/p. 44)
06 Dec 1866
ORANGE gained from BREVARD. (Fla. Laws 1866, 14th sess., ch. 1621/p. 82)
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)
14 Feb 1872
ORANGE gained from SUMTER. (Fla. Laws 1872, 5th sess., ch. 1895/p. 52)
18 Feb 1873
ORANGE lost to BREVARD. (Fla. Laws 1873, 6th sess., ch. 1964/p. 36)
19 Feb 1874
ORANGE gained from BREVARD. (Fla. Laws 1874, 7th sess., ch. 1998/p. 63)
05 Mar 1879
ORANGE gained from POLK. (Fla. Laws 1879, 10th sess., ch. 3177/p. 141)
11 Jul 1887
ORANGE lost to creation of OSCEOLA and lost small area to BREVARD. (Fla. Laws 1887, 1st sess., ch. 3768/p. 148)
26 Jul 1887
ORANGE lost to creation of LAKE. (Fla. Laws 1887, 1st sess., ch. 3771, secs. 1-2/pp. 154-155)
31 May 1889
ORANGE lost small area to LAKE. (Fla. Laws 1889, ext. sess., ch. 3944/p. 176)
25 Apr 1913
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)
22 Jun 1961
ORANGE boundaries were redefined, correcting mistake of 25 April 1913 [no change]. (Fla. Laws 1961, 38th sess., gen., ch. 61-483/p. 1075)

OSCEOLA

11 Jul 1887
OSCEOLA created from BREVARD and ORANGE. (Fla. Laws 1887, 1st sess., ch. 3768/p. 148)
07 Aug 1917
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)
01 Jan 1968
OSCEOLA exchanged with POLK. (Fla. Laws 1967, 41st sess., gen., ch. 67-592, secs. 1-3/pp. 1728-1730)

Overlap Area

23 Nov 1828
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)
02 Jan 1857
1828 overlap between NASSAU and DUVAL ended. (Fla. Laws 1856, 8th sess., ch. 811/p. 55)

PALM BEACH

01 Jul 1909
PALM BEACH created from DADE (now MIAMI-DADE). (Fla. Laws 1909, 12th sess., ch. 5970, sec. 1/p. 174)
01 Oct 1915
PALM BEACH lost to creation of BROWARD. (Fla. Laws 1915, 15th sess., gen., ch. 6934, secs. 1, 23/pp. 285, 292)
07 Aug 1917
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)
08 May 1925
PALM BEACH lost part of Lake Okeechobee to GLADES. (Fla. Laws 1925, 20th sess., spec., ch. 10596/p. 1860)
14 May 1925
PALM BEACH lost small part of Lake Okeechobee to HENDRY. (Fla. Laws 1925, 20th sess., gen., ch. 10090/p. 112)
04 Aug 1925
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)
29 May 1963
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)

PASCO

02 Jun 1887
PASCO created from HERNANDO. (Fla. Laws 1887, 1st sess., ch. 3772, secs. 1, 8/pp. 157-159)
10 Jun 1891
PASCO lost to POLK. (Fla. Laws 1891, 3d sess., ch. 4066/p. 108)
29 Jul 1942
PASCO gained from POLK. (Fla. Stat., 1941, 1:secs. 7.22, 7.26, 7.51, 7.53)
31 Dec 1949
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)

PINELLAS

14 Nov 1911
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)
15 May 1939
PINELLAS gained small area (Mullet Key) from HILLSBOROUGH. (Fla. Laws 1939, 27th sess., gen., ch. 19058/p. 116)
04 Aug 1967
PINELLAS boundary in the Gulf of Mexico was clarified [no change]. (Fla. Laws 1967, 41st sess., gen., ch. 67-601/p. 1789)

POLK

08 Feb 1861
POLK created from BREVARD and HILLSBOROUGH. (Fla. Laws 1860, 10th sess., ch. 1201/p. 192; Fla. Rpts., 120:429-431)
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)
30 Jan 1871
POLK gained from SUMTER. (Fla. Laws 1871, 4th sess., ch. 1848/p. 36)
19 Feb 1874
POLK gained from HILLSBOROUGH. (Fla. Laws 1874, 7th sess., ch. 1998/p. 63)
05 Mar 1879
POLK lost to ORANGE and SUMTER. (Fla. Laws 1879, 10th sess., ch. 3177/p. 141)
by 1880
POLK lost to HERNANDO. (Rand, McNally, 1880, 254-255)
05 Mar 1883
POLK gained small area from HERNANDO. (Fla. Laws 1883, 12th sess., ch. 3471/p. 80)
31 May 1889
POLK gained from SUMTER. (Fla. Laws 1889, ext. sess., ch. 3932/p. 167)
10 Jun 1891
POLK gained small area from LAKE and gained from PASCO. (Fla. Laws 1891, 3d sess., ch. 4066/p. 108)
29 Jul 1942
POLK lost to PASCO. (Fla. Stat., 1941, 1:secs. 7.22, 7.26, 7.51, 7.53)
31 Dec 1949
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)
01 Jan 1968
POLK exchanged with OSCEOLA. (Fla. Laws 1967, 41st sess., gen., ch. 67-592, secs. 1-3/pp. 1728-1730)

PUTNAM

13 Jan 1849
PUTNAM created from ALACHUA and ST. JOHNS. (Fla. Laws 1848, 4th sess., ch. 280, sec. 1/p. 87)
15 Jan 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)
22 Dec 1859
PUTNAM lost to CLAY. (Fla. Laws 1859, adj. sess., ch. 1039/p. 63)
30 Jul 1868
PUTNAM gained from ST. JOHNS. (Fla. Laws 1868, 1st sess., ch. 1673/p. 174)
15 Feb 1875
PUTNAM exchanged with ST. JOHNS in the St. Johns River and Crescent Lake. (Fla. Laws 1875, 8th sess., ch. 2068/p. 70)
26 Feb 1883
PUTNAM lost to CLAY. (Fla. Laws 1883, 12th sess., ch. 3469/p. 79)
28 May 1887
PUTNAM exchanged with MARION. (Fla. Laws 1887, 1st sess., ch. 3767/p. 147)
05 May 1909
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)
06 Jun 1927
PUTNAM gained small areas from BRADFORD and CLAY. (Fla. Laws 1927, 21st sess., gen., ch. 12489, sec. 1/p. 1585)
20 Jun 1959
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)
14 Jun 1984
PUTNAM lost small area to CLAY. (Fla. Laws 1984, reg. sess., gen., ch. 84-211, secs. 1-3/pp. 664-666)

ST. JOHNS

21 Jul 1821
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)
12 Aug 1822
ST. JOHNS lost to creation of DUVAL. (Fla. Terr. Acts 1822, 1st sess., sec. 1/p. 3)
24 Jun 1823
ST. JOHNS exchanged with DUVAL. (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 8)
03 Jul 1823
ST. JOHNS lost to creation of MONROE. (Fla. Terr. Acts 1823, 2d sess., sec. 1/p. 122)
29 Dec 1824
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)
14 Mar 1844
ST. JOHNS lost to creation of MARION. (Fla. Terr. Acts 1844, 22d sess., sec. 1/p. 43)
25 Dec 1846
ST. JOHNS gained from MARION along the St. Johns River and Lake George. (Fla. Laws 1846, 2d sess., ch. 106/p. 63)
30 Dec 1848
ST. JOHNS gained from MARION. (Fla. Laws 1848, 4th sess., ch. 289/p. 96)
13 Jan 1849
ST. JOHNS lost to creation of PUTNAM. (Fla. Laws 1848, 4th sess., ch. 280, sec. 1/p. 87)
15 Jan 1859
ST. JOHNS exchanged with PUTNAM in the St. Johns River and Crescent Lake. (Fla. Laws 1858, 9th sess., ch. 923/p. 57)
22 Dec 1859
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)
30 Jul 1868
ST. JOHNS lost to PUTNAM. (Fla. Laws 1868, 1st sess., ch. 1673/p. 174)
15 Feb 1875
ST. JOHNS gained from VOLUSIA, exchanged with DUVAL and PUTNAM. (Fla. Laws 1875, 8th sess., ch. 2068/p. 70)
24 May 1899
ST. JOHNS lost small area to VOLUSIA. (Fla. Laws 1899, 7th sess., ch. 4811, secs. 1-2/pp. 209-210)
03 Jun 1907
Boundary between ST. JOHNS and VOLUSIA was clarified [no change]. (Fla. Laws 1907, 11th sess., ch. 5730, secs. 1-2/pp. 244-245)
12 Jun 1917
ST. JOHNS lost to creation of FLAGLER. (Fla. Laws 1917, 16th sess., gen., ch. 7399, secs. 1, 22-23/pp. 277, 284)

ST. LUCIE original (see BREVARD)

ST. LUCIE

01 Jul 1905
ST. LUCIE created from BREVARD. (Fla. Laws 1905, 10th sess., ch. 5567, secs. 1, 22/pp. 404, 408)
07 Aug 1917
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)
29 Jun 1925
ST. LUCIE lost to creation of INDIAN RIVER. (Fla. Laws 1925, 20th sess., gen., ch. 10148, sec. 1/p. 294)
04 Aug 1925
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)

SANTA ROSA

18 Feb 1842
SANTA ROSA created by Florida Territory from ESCAMBIA. (Fla. Terr. Acts 1842, 20th sess., no. 1, sec. 1/p. 3)
11 Jan 1851
SANTA ROSA exchanged with WALTON. (Fla. Laws 1850, 5th sess., ch. 411/p. 146)
14 Jan 1853
SANTA ROSA gained from WALTON. (Fla. Laws 1852, 6th sess., ch. 571/p. 145)
07 Sep 1915
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)
11 Jun 1951
SANTA ROSA gained small area from ESCAMBIA on Santa Rosa Island. (Fla. Laws 1951, 33d sess., gen., ch. 26860/p. 742)
29 Jun 1957
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)
27 Apr 1991
SANTA ROSA gained small area from ESCAMBIA on Santa Rosa Island. (Fla. Laws 1991, 12th leg., ch. 91-310/pp. 2983-2986)

SARASOTA

15 Jun 1921
SARASOTA created from MANATEE. (Fla. Laws 1921, 18th sess., gen., ch. 8515, secs. 1, 22-23/pp. 294, 300; Grismer, Sarasota, 200-201)

SEMINOLE

25 Apr 1913
SEMINOLE created from ORANGE [mistake in description corrected 31 May 1961]. (Fla. Laws 1913, 14th sess., gen., ch. 6511, sec. 1/p. 365)
12 Jun 1941
Part of the boundary between SEMINOLE and VOLUSIA was clarified [no discernible change]. (Fla. Laws 1941, 28th sess., gen., ch. 20888/p. 2358)
31 May 1961
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)

Spanish East Florida

03 Sep 1783
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)
22 Feb 1819
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)

Spanish West Florida

03 Sep 1783
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)
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 (parts of present Louisiana, Mississippi, and Alabama); Spanish control and claims to the area effectively ended. (Cox, facing 2; Fuller, 202)
22 Feb 1819
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)

SUMTER

08 Jan 1853
SUMTER created from MARION. (Fla. Laws 1852, 6th sess., ch. 548, sec. 1/p. 124)
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)
13 Dec 1866
SUMTER gained from HILLSBOROUGH. (Fla. Laws 1866, 14th sess., ch. 1589/p. 61)
30 Jan 1871
SUMTER lost to POLK. (Fla. Laws 1871, 4th sess., ch. 1848/p. 36)
14 Feb 1872
SUMTER lost to ORANGE. (Fla. Laws 1872, 5th sess., ch. 1895/p. 52)
05 Mar 1879
SUMTER gained from POLK. (Fla. Laws 1879, 10th sess., ch. 3177/p. 141)
26 Jul 1887
SUMTER lost to creation of LAKE. (Fla. Laws 1887, 1st sess., ch. 3771, secs. 1-2/pp. 154-155)
31 May 1889
SUMTER lost to POLK. (Fla. Laws 1889, ext. sess., ch. 3932/p. 167)

SUWANNEE

Feb 1859
SUWANNEE was created from COLUMBIA. (Fla. Laws 1858, 9th sess., ch. 895, secs. 1-4/p. 37)
12 Dec 1859
SUWANNEE lost to COLUMBIA. (Fla. Laws 1859, adj. sess., ch. 1048/p. 69)
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)
30 May 1889
SUWANNEE exchanged with COLUMBIA. (Fla. Laws 1889, ext. sess., ch. 3948/p. 181)

TAYLOR

23 Dec 1856
TAYLOR created from MADISON. (Fla. Laws 1856, 8th sess., ch. 806, secs. 1-3/p. 48)
21 Dec 1858
TAYLOR lost to LAFAYETTE. (Fla. Laws 1858, 9th sess., ch. 921/p. 55)
13 Feb 1877
TAYLOR gained from LAFAYETTE. (Fla. Laws 1877, 9th sess., ch. 3061/p. 121)
31 Jan 1883
TAYLOR lost to LAFAYETTE [mistake in description corrected 12 February 1885]. (Fla. Laws 1883, 12th sess., ch. 3470/p. 79)
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)
28 May 1887
TAYLOR gained from LAFAYETTE. (Fla. Laws 1887, 1st sess., ch. 3766/p. 147)
24 May 1911
TAYLOR lost to LAFAYETTE. (Fla. Laws 1911, 13th sess., ch. 6246/p. 218)

UNION

01 Oct 1921
UNION created from BRADFORD. (Fla. Laws 1921, 18th sess., gen., ch. 8516, secs. 1, 27/pp. 301, 307)

VOLUSIA

29 Dec 1854
VOLUSIA created from ORANGE. (Fla. Laws 1854, 7th sess., ch. 624/p. 44)
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)
15 Feb 1875
VOLUSIA lost to ST. JOHNS. (Fla. Laws 1875, 8th sess., ch. 2068/p. 70)
11 Mar 1879
VOLUSIA lost to BREVARD. (Fla. Laws 1879, 10th sess., ch. 3175/p. 140)
24 May 1899
VOLUSIA gained small area from ST. JOHNS. (Fla. Laws 1899, 7th sess., ch. 4811, secs. 1-2/pp. 209-210)
03 Jun 1907
Boundary between VOLUSIA and ST. JOHNS was clarified [no change]. (Fla. Laws 1907, 11th sess., ch. 5730, secs. 1-2/pp. 244-245)
12 Jun 1917
VOLUSIA lost to creation of FLAGLER. (Fla. Laws 1917, 16th sess., gen., ch. 7399, secs. 1, 22-23/pp. 277, 284)
12 Jun 1941
Part of the boundary between VOLUSIA and SEMINOLE was clarified [no discernible change]. (Fla. Laws 1941, 28th sess., gen., ch. 20888/p. 2358)
14 Jun 1967
VOLUSIA boundaries were redefined [no change]. (Fla. Laws 1967, 41st sess., gen., ch. 67-190/p. 389)
24 Jun 1983
VOLUSIA boundaries were redefined [no change]. (Fla. Laws 1983, reg. and spec. sess., gen., ch. 83-217, sec. 1/p. 984)

WAKULLA

11 Mar 1843
WAKULLA created by Florida Territory from LEON. (Fla. Terr. Acts 1843, 21st sess., no. 25/p. 29 and no. 30/p. 33)
06 Jan 1849
WAKULLA gained from LEON. (Fla. Laws 1848, 4th sess., ch. 288/p. 96)
13 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)
22 Jan 1851
WAKULLA gained from LEON. (Fla. Laws 1850, 5th sess., ch. 414/p. 148)
01 Oct 1986
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)

WALTON

29 Dec 1824
WALTON created by Florida Territory from ESCAMBIA and JACKSON. (Fla. Terr. Acts 1824, 3d sess., sec. 2/p. 260)
09 Dec 1825
WALTON gained from ESCAMBIA, exchanged with JACKSON, lost to creation of WASHINGTON. (Fla. Terr. Acts 1825, 4th sess., p. 35)
08 Jan 1848
WALTON lost to creation of HOLMES. (Fla. Laws 1847, 3d sess., ch. 176, sec. 1/p. 45)
11 Jan 1851
WALTON gained part of Santa Rosa Island from ESCAMBIA, exchanged with SANTA ROSA. (Fla. Laws 1850, 5th sess., ch. 411/p. 146)
14 Jan 1853
WALTON lost to SANTA ROSA. (Fla. Laws 1852, 6th sess., ch. 571/p. 145)
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)
17 May 1913
WALTON gained from WASHINGTON. (Fla. Laws 1913, 14th sess., gen., ch. 6508, sec. 1/p. 359)
07 Sep 1915
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)

WASHINGTON

09 Dec 1825
WASHINGTON created by Florida Territory from JACKSON and WALTON. (Fla. Terr. Acts 1825, 4th sess., p. 35)
12 Jan 1827
WASHINGTON exchanged with JACKSON. (Fla. Terr. Acts 1826, 5th sess., p. 108)
29 Oct 1828
WASHINGTON exchanged with JACKSON. (Fla. Terr. Acts 1828, 7th sess., p. 6)
08 Feb 1832
WASHINGTON lost to creation of FRANKLIN. (Fla. Terr. Acts 1832, 10th sess., no. 42/p. 44)
11 Feb 1832
WASHINGTON exchanged with JACKSON. (Fla. Terr. Acts 1832, 10th sess., no. 72/p. 113)
16 Feb 1833
WASHINGTON lost to FAYETTE (extinct) and JACKSON. (Fla. Terr. Acts 1833, 11th sess., chs. 687-688/pp. 52-53)
26 Jan 1838
WASHINGTON apparently gained small area from FRANKLIN, lost to creation of CALHOUN. (Fla. Terr. Acts 1838, 16th sess., no. 8, sec. 1/p. 9)
25 Feb 1840
WASHINGTON exchanged with CALHOUN. (Fla. Terr. Acts 1840, 18th sess., no. 21/p. 23)
04 Jan 1847
WASHINGTON gained from JACKSON. (Fla. Laws 1846, 2d sess., ch. 108/p. 64)
28 Dec 1847
WASHINGTON exchanged with JACKSON. (Fla. Laws 1847, 3d sess., ch. 180/p. 49)
14 Feb 1873
WASHINGTON gained from CALHOUN [mistake in description corrected 2 June 1893]. (Fla. Laws 1873, 6th sess., ch. 1950/p. 27)
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)
02 Jun 1893
WASHINGTON boundaries were redefined, correcting mistake of 14 February 1873 [no change]. (Fla. Laws 1893, 4th sess., ch. 4236/p. 169)
04 Jun 1897
WASHINGTON exchanged with CALHOUN. (Fla. Laws 1897, 6th sess., ch. 4577/p. 119)
17 May 1913
WASHINGTON lost to WALTON. (Fla. Laws 1913, 14th sess., gen., ch. 6508, sec. 1/p. 359)
01 Jul 1913
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)
08 Aug 1915
WASHINGTON gained from JACKSON, lost to HOLMES. (Fla. Laws 1915, 15th sess., gen., ch. 6935, secs. 1-2, 16/pp. 292-293, 297)