Florida County Creation Dates and Parent CountiesEdit This Page
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| Name of County | Date Formed | Parent County | Progeny County |
| Alachua | 29 Dec 1824 | Duval, St. Johns | Benton 1844, Columbia 1832, Levy 1845, Gilchrist 1925, Hillsborough 1848, Marion 1844, Putnam 1849, Hernando 1843 |
| Baker | 8 Feb 1861 | New River | none |
| Bay | 24 Apr 1913 | Calhoun, Washington | none |
| Benton | 24 Feb 1843 | renamed from Hernando | Hernando 1850 |
| Bradford | 6 Dec 1861 | renamed from New River | Union 1921 |
| Brevard | 14 Mar 1844 | St. Lucie (old) | Osceola 1887, Polk 1861 |
| Broward | 1 Oct 1915 | Dade, Palm Beach | none |
| Calhoun | 26 Jan 1848 | Franklin, Washington | Bay 1913, Gulf 1925 |
| Charlotte | 23 Apr 1921 | De Soto | none |
| Citrus | 2 Jun 1887 | Hernando | none |
| Clay | 31 Dec 1858 | Duval | none |
| Collier | 8 May 1923 |
Lee, Monroe | none |
| Columbia | 4 Feb 1832 | Alachua | Suwanee 1858 |
| Dade | 4 Feb 1836 | Monroe | Broward 1915, Palm Beach 1909 |
| DeSoto | 9 May1887 | Manatee | Charlotte 1921, Glades 1921, Hardee 1921, Highland 1921 |
| Dixie | 25 Apr 1921 | Lafayette | none |
| Duval | 12 Aug 1822 | St. Johns | Alachua 1924, Clay 1858, Hamilton 1827, Nassau 1824 |
| Escambia | 21 Jul 1821 | Florida Territory | Jackson 1822, Santa Rosa 1842 |
| Flagler | 2 Jun 1917 | St. Johns | none |
| Franklin | 8 Feb 1832 | Jackson | Calhoun 1848, Franklin 1855 |
| Gadsden | 24 Jun 1823 | Jackson | Leon 1824, Liberty 1855 |
| Gilchrist | 4 Dec 1925 | Alachua | none |
| Glades | 23 Apr 1921 | De Soto | none |
| Gulf | 6 Jun 1925 | Calhoun | none |
| Hamilton | 26 Dec 1827 | Duval | none |
| Hardee | 23 Apr 1921 | De Soto | none |
| Hendry | 11 May 1923 | Lee | none |
| Hernando (Old) | 24 Feb 1843 | Alachua | renamed Benton 1844 |
| Hernando (new) | 24 Dec 1850 | Benton | Citrus 1887, Pasco 1887 |
| Highlands | 23 Apr 1921 | De Soto | none |
| Hillsborough | 25 Jan 1848 | Alachua, Monroe | Mantee 1855, Pinellas 1911, Polk 1861 |
| Holmes | 8 Jan 1848 | Walton, Washington | none |
| Indian River | 30 May 1925 |
St. Lucie (old) | none |
| Jackson | 12 Aug 1922 | Escambia | Franklin 1832, Gadsden 1823, Walton 1824, Washington 1825 |
| Jefferson | 20 Jan 1827 | Leon | Madison 1827 |
| Lafayette | 23 Dec 1856 | Madison | Dixie 1921 |
| Lake | 27 May 1887 |
Orange, Sumter | none |
| Lee | 13 May 1887 |
Monroe | Collier 1923, Hendry 1923 |
| Leon | 29 Dec 1924 | Gadsden | Jeffrson 1827, Wakulla 1843 |
| Levy | 10 Mar 1845 | Alachua, Marion | none |
| Liberty | 15 Dec 1855 | Franklin, Gadsden | none |
| Madison | 26 Dec 1827 | Jefferson | Lafayette 1856, Taylor 1856 |
| Manatee | 9 Jan 1855 | Hillsborough | De Soto 1887, Sarasota 1921 |
| Marion | 14 Mar 1844 | Alachua | Levy 1845, Putnam 1849 |
| Martin | 30 May 1925 |
Palm Beach | none |
| Monroe | 29 Dec 1924 | St. Johns | Collier 1923, Dade 1836, Lee 1887, Hillsborough 1848 |
| Mosquito | 29 Dec 1924 | Florida Territory | renamed Orange 1845 |
| Nassau | 29 Dec 1924 | Duval | none |
| New River | 21 Dec 1858 | Florida Territory | renamed Bradford 1861, Baker 1861 |
| Okaloosa | 7 Sep 1915 | Santa Rosa, Walton | none |
| Okeechobee | 8 May 1917 |
Osceola, Palm beach | none |
| Orange | 30 Jan 1845 | renamed from Mosquito | Sumter 1853, Lake 1887, Osceola 1887, Putnam 1849, Seminole 1913 |
| Osceola | 13 May 1887 |
Brevard, Orange | Okeechobee 1917 |
| Palm Beach | 30 Apr 1909 | Dade | Broward 1915, Martin 1925, Okeechobee 1917 |
| Pasco | 2 Jun 1887 | Hernando | none |
| Pinellas | 14 Nov 1911 | Hillsborough | none |
| Putnam | 13 Jan 1849 | Alachua, Marion, Orange, St. Johns | none |
| St. Johns | 21 Jul 1821 | Florida Territory | Alachua 1824, Duval 1822, Monroe 1924, Flagler 1917, Putnam 1849 |
| St. Lucie | 14 Mar 1844 | Florida Territory | Brevard 1855 |
| Santa Rosa | 18 Feb 1842 | Escambia | Okaloosa 1915 |
| Sarasota | 14 May 1921 |
Manatee | none |
| Seminole | 25 Apr 1913 | Orange | none |
| Sumter | 8 Jan 1853 | Marion, Orange | Lake 1887 |
| Taylor | 23 Dec 1856 | Madison | none |
| Union | 20 May 1921 |
Bradford | none |
| Volusia | 29 Dec 1834 | Florida Territory | none |
| Wakulla | 11 Mar 1843 | Leon | none |
| Walton | 29 Dec 1824 | Jackson | Holmes 1848, Okaloosa 1915, Jackson 1825 |
| Washington | 9 Dec 1925 | Jackson, Walton | Bay 1913, Calhoun 1848, Holmes 1848 |
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- This page was last modified on 29 April 2010, at 18:38.
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