Affiliated with the American History & Genealogy Project
and the American Local History Network
County Volunteers Needed
Contact Jim Powell Jr
| County Name | Date Formed | Parent County | County Seat | Coordinator |
| Alachua | 1824 | St Johns & Duval | Gainesville | Jim Powell, Jr. |
| Baker | 1861 | New River | McClenny | |
| Bay | 1913 | Calhoun & Washington | Panama City | |
| Bradford | 1861 | New River | Starke | Adopted |
| Brevard | 1855 | Mosquito, St Lucie | Titusville | Adopted |
| Broward | 1915 | Dade & Palm Beach | Fort Lauderdale | |
| Calhoun | 1838 | Franklin, Washington & Jackson | Blountstown | |
| Charlotte | 1921 | DeSoto | Punta Gorda | |
| Citrus | 1887 | Hernando | Inverness | |
| Clay | 1858 | Duval | Green Cove Springs | Adopted |
| Collier | 1923 | Lee & Monroe | Naples | |
| Columbia | 1832 | Alachua | Lake City | |
| Dade | 1836 | Monroe, St Lucie | Miami | |
| Desoto | 1887 | Manatee | Arcadia | |
| Dixie | 1921 | Lafayette | Cross City | |
| Duval | 1822 | St Johns | Jacksonville | Debbie Jennings |
| Escambia | 1822 | An Original County | Pensacola | |
| Flagler | 1917 | St Johns, Volusia | Bunnell | |
| Franklin | 1832 | Jackson | Apalachicola | |
| Gadsden | 1823 | Jackson | Quincy | |
| Gilchrist | 1925 | Alachua | Trenton | Jim Powell Jr |
| Glades | 1921 | DeSoto | Moore Haven | |
| Gulf | 1925 | Calhoun | Port Saint Joe | |
| Hamilton | 1827 | Duval | Jasper | |
| Hardee | 1921 | DeSoto | Wauchula | |
| Hendry | 1923 | Lee | La Belle | |
| Hernando | 1850 | Alachua | Brooksville | |
| Highlands | 1921 | DeSoto | Sebring | |
| Hillsborough | 1834 | Alachua & Monroe | Tampa | Adopted |
| Holmes | 1848 | Walton, Washington & Calhoun | Bonifay | |
| IndianRiver | 1925 | St Lucie | Vero Beach | |
| Jackson | 1822 | Escambia | Marianna | |
| Jefferson | 1827 | Leon | Monticello | |
| Lafayette | 1856 | Madison | Mayo | Darrel R. Bell |
| Lake | 1856 | Orange & Sumter | Tavares | |
| Lee | 1887 | Monroe | Fort Meyers | |
| Leon | 1824 | Gadsden | Tallahassee | |
| Levy | 1845 | Alachua & Marion | Bronson | |
| Liberty | 1855 | Alachua & Gadsden | Bristol | |
| Madison | 1827 | Jefferson | Madison | |
| Manatee | 1855 | Hillsborough | Bradenton | |
| Marion | 1844 | Alachua, Hillsborough & Mosquito | Ocala | |
| Martin | 1925 | Palm Beach & St Lucie | Stuart | |
| Monroe | 1823 | St Johns | Key West | |
| Nassau | 1824 | Duval | Fernandina Beach | |
| New River | 1858 | Alachua & Columbia | ||
| Okaloosa | 1915 | Santa Rosa | Crestview | |
| Okeechobee | 1917 | Osceola, Palm Beach & St Lucie | Okeechobee | Adopted |
| Orange | 1824 | Mosquito | Orlando | |
| Osceola | 1887 | Brevard & Orange | Kissimmee | |
| Palm Beach | 1909 | Dade | West Palm Beach | |
| Pasco | 1887 | Hernando | Dade City | |
| Pinellas | 1912 | Hillsborough | Clearwater | |
| Polk | 1861 | Brevard & Hillsborough | Bartow | |
| Putnam | 1849 | Alachua, Marion, Orange & St Johns | Palatka | |
| St Johns | 1822 | An Original County | Saint Augustine | Debbie Jennings |
| St Lucie | 1905 | Brevard | Fort Pierce | |
| Santa Rosa | 1842 | Escambia | Milton | Adopted |
| Sarasota | 1921 | Manatee | Sarasota | |
| Seminole | 1913 | Orange | Sanford | Adopted |
| Seminole (GH&GS) | 1913 | Orange | Sanford | Geneva Historical & Genealogical Society |
| Sumter | 1853 | Marion | Bushnell | |
| Suwannee | 1858 | Columbia | Live Oak | |
| Taylor | 1856 | Madison | Perry | |
| Union | 1921 | Bradford | Lake Butler | Barb Lavin |
| Volusia | 1854 | St Lucas | De Land | |
| Wakulla | 1843 | Leon | Crawfordville | |
| Walton | 1824 | Jackson | De Funiak Springs | |
| Washington | 1825 | Jackson & Walton | Chipley | |
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