For each county in Florida, the following table provides the mailing address of its courthouse, the date on which the county was formed, and the name of the parent counties, if not one of the original counties.
| County | Mailing Address of Courthouse | Date of Formation | Parent Counties |
| Alachua | PO Box 600
Gainesville, FL 32602 |
29 Dec 1824 |
Duval, Saint Johns |
| Baker | 339 E Macclenny Ave
Macclenny, FL 32063-2101 |
8 Feb 1861 |
New River |
| Bay | 300 E 4th St
Panama City, FL 32401-3073 |
24 Apr 1913 |
Calhoun, Washington |
| Benton (see Hernando) |
| Bradford | PO Drawer B
Starke, FL 32091-1286 |
21 Dec 1858
(known as New River until 6 Dec 1861) |
Columbia |
| Brevard | PO Box H
Titusville, FL 32780 |
14 Mar 1844
(known as Saint Lucie until 6 Jan 1855) |
Mosquito |
| Broward | PO Box 14668
Fort Lauderdale, FL 33302 |
30 Apr 1915 |
Dade, Palm Beach |
| Calhoun | 425 E Central Ave
Blountstown, FL 32424-2242 |
26 Jan 1838 | Franklin |
| Charlotte | PO Box 1687
Punta Gorda, FL 33951 |
23 Apr 1921 |
DeSoto |
| Citrus | 110 N Apopka Ave
Inverness, FL 32650 |
2 Jun 1887 |
Hernando |
| Clay | PO Box 698
Green Cove Springs, FL 32043 |
31 Dec 1858 | Duval |
| Collier | PO Box 413020
Naples, FL 33941 |
8 May 1923 |
Lee |
| Columbia | PO Box 1965
Lake City, FL 32056 |
4 Feb 1832 |
Alachua |
| Dade (see Miami-Dade) |
| DeSoto | PO Box 591
Arcadia, FL 33821 |
19 May 1887 |
Manatee |
| Dixie | PO Box 1206
Cross City, FL 32628-1206 |
25 Apr 1921
| Lafayette |
| Duval | 330 E Bay St
Jacksonville, FL 32202-2997 |
12 Aug 1822
| Saint Johns |
| Escambia | 223 S Palafox Pl
Pensacola, FL 32501-5845 |
21 Jul 1821 | original county |
| Fayette | | 9 Feb 1832
(re-annexed by Jackson on 1 Feb 1834) |
Jackson |
| Flagler | PO Box 787
Bunnell, FL 32110 |
28 Apr 1917 |
Saint Johns, Volusia |
| Franklin | PO Box 340
Apalachicola, FL 32320 |
8 Feb 1832 |
Jackson |
| Gadsden | PO Box 1649
Quincy, FL 32351 |
24 Jun 1823 |
Jackson |
| Gilchrist | 112 S Main St
Trenton, FL 32693 |
4 Dec 1925 |
Alachua |
| Glades | PO Box 10
Moore Haven, FL 33471-0010 |
23 Apr 1921 |
DeSoto |
| Gulf | 1000 5th St
Port St. Joe, FL 32456-1648 |
6 Jun 1925 |
Calhoun |
| Hamilton | PO Box 312
Jasper, FL 32052 |
26 Dec 1827 |
Jefferson |
| Hardee | 412 W Orange St
Wauchula, FL 33873-2831 |
23 Apr 1921 |
DeSoto |
| Hendry | PO Box 1760
LaBelle, FL 33935 |
11 May 1923 | Lee |
| Hernando | PO Box 1660
Brooksville, FL 44298 |
24 Feb 1843
(known as Benton between 6 Mar 1844 and 24 Dec 1850) |
Alachua |
| Highlands | 430 S Commerce Ave
Sebring, FL 33870-3705 |
23 Apr 1921
| DeSoto |
| Hillsborough | 419 N Pierce St
Tampa, FL 33602-4022 |
25 Jan 1834 | Alachua, Monroe |
| Holmes | 201 N Oklahoma St
Bonifay, FL 32425-2243 |
8 Jan 1848
| Jackson, Walton |
| Indian River | PO Box 1028
Vero Beach, FL 32961 |
30 May 1925
| Saint Lucie |
| Jackson | PO Box 510
Marianna, FL 32446-0510 |
12 Aug 1822 |
Escambia |
| Jefferson | Monticello, FL 32344 |
20 Jan 1827 | Leon |
| Lafayette | PO Box 88
Mayo, FL 32066 |
23 Dec 1856 | Madison
|
| Lake | 315 W Main St
Tavares, FL 32778-3878 |
27 May 1887 |
Orange, Sumter |
| Lee | PO Box 2469
Ft. Myers, FL 33902 |
13 May 1887 |
Monroe |
| Leon | PO Box 726
Tallahassee, FL 32302 |
29 Dec 1824 |
Gadsden |
| Levy | PO Box 610
Bronson, Fl 32621-0610 |
10 Mar 1845 |
Alachua, Marion |
| Liberty | PO Box 399
Bristol, FL 32321 |
15 Dec 1855 |
Franklin, Gadsden |
| Madison | PO Box 237
Madison, FL 32340-0237 |
26 Dec 1827
| Jefferson |
| Manatee | PO Box 1000
Bradenton, FL 34206-1000 |
9 Jan 1855
| Hillsborough |
| Marion | PO Box 1030
Ocala, FL 32678 |
14 Mar 1844 |
Alachua, Mosquito |
| Martin | PO Box 779
Stuart, FL 33495 |
30 May 1925 |
Palm Beach, Saint Lucie |
| Miami-Dade | 111 NW First St
Miami, FL 33128 |
4 Feb 1836
(known as Dade until 13 Nov 1997) | Monroe |
| Monroe | 500 Whitehead St
Key West, FL 33040-6581 |
3 Jul 1823 |
Saint Johns |
| Mosquito (see Orange) |
| Nassau | PO Box 456
Fernandina Beach, FL 33040 |
29 Dec 1824
| Duval |
| New River (see Bradford) |
| Okaloosa | Hwy 90
Crestview, FL 32536 |
13 Jun 1915 |
Santa Rosa, Walton |
| Okeechobee | 304 NW 2nd St
Okeechobee, FL 34972-4146 |
8 May 1917
| Osceola, Palm Beach, Saint Lucie |
| Orange | 201 S Rosalind Ave
Orlando, FL 32801-3547 |
29 Dec 1824
(known as Mosquito until 30 Jan 1845) |
Saint Johns |
| Osceola | 21 S Vernon Ave
Kissimmee, FL 34741-5188 |
12 May 1887 | Brevard, Orange |
| Palm Beach | 301 N Olive Ave
West Palm Beach, FL 33401 |
30 Apr 1909 | Dade |
| Pasco | 7530 Little Rd
New Port Richey, FL 34654 | 2 Jun 1887 |
Hernando |
| Pinellas | 315 Court St
Clearwater, FL 34616-5165 |
23 May 1911
| Hillsborough |
| Polk | PO Box 9000
Bartow, FL 33830 |
8 Feb 1861 |
Brevard, Hillsborough |
| Putnam | 410 St. Johns Ave
Palatka, FL 32177-4725 |
13 Jan 1849 | Alachua, Marion, Orange, Saint Johns |
| Saint Johns | 99 Cordova St
St. Augustine, FL 32084-4415 |
21 Jul 1821 | original county |
Saint Lucie
(also see Brevard) |
221 S Indian River Dr
Fort Pierce, FL 34950-4301 |
24 May 1905 | Brevard |
| Santa Rosa | PO Box 472
Milton, FL 32572 |
18 Feb 1842 | Escambia |
| Sarasota | 2000 Main St
Sarasota, FL 34237-6036 |
14 May 1921 |
Manatee |
| Seminole | 301 N Park Ave
Sanford, FL 32771-1292 |
25 Apr 1913 | Orange |
| Sumter | 209 N Florida St
Bushnell, FL 33513-9402 |
8 Jan 1853 |
Marion |
| Suwannee | 200 Ohio Ave S
Live Oak, FL 32060-3239 |
21 Dec 1858 |
Columbia |
| Taylor | PO Box 620
Perry, FL 32347-0620 |
23 Dec 1856 |
Madison |
| Union | 55 W Main St, Rm 103
Lake Butler, FL 32054-1600 |
20 May 1921 | Bradford |
| Volusia | 123 W Indiana Ave
DeLand, FL 32720-4210 |
29 Dec 1854 | Orange |
| Wakulla | PO Box 337
Crawfordville, FL 32327 |
11 Mar 1843 |
Leon |
| Walton | PO Box 1260
DeFuniak Springs, FL 32433 |
29 Dec 1824 |
Escambia, Jackson |
| Washington | 201 W Cypress Ave, Suite B
Chipley, FL 32428 |
9 Dec 1825 | Jackson, Walton |
