Fastest Growing Counties in Florida (2025)

County
Rank
Change (2020)
2025 Pop.
2020 Pop.
Sumter County126.76%165,161130,290
St. Johns County224.93%346,186277,099
St. Lucie County321.59%402,986331,441
Walton County421.48%92,25475,941
Flagler County521.35%140,801116,028
Polk County620.28%878,226730,158
Pasco County720.23%680,706566,156
Osceola County819.72%468,266391,141
Nassau County919.58%108,85191,031
Hendry County1018.87%47,21739,723
Lake County1117.35%453,206386,216
Gilchrist County1216.08%20,75717,882
Marion County1315.77%437,003377,472
Manatee County1415.77%464,947401,619
Bay County1515.68%201,887174,525
Gulf County1615.58%16,48114,259
Wakulla County1715.09%39,00933,893
Hernando County1814.79%224,551195,624
Levy County1914.1%49,12943,059
Charlotte County2013.43%213,238187,995
Citrus County2113.27%175,072154,568
Santa Rosa County2212.74%213,088189,011
Jefferson County2312.59%16,21214,399
Lee County2412.2%858,937765,547
Clay County2511.46%244,049218,951
Glades County2611.21%13,43212,078
Collier County2710.76%417,898377,310
Sarasota County2810.48%481,935436,237
Brevard County2910.14%670,523608,775
Volusia County3010.07%611,741555,776
Highlands County3110.06%111,544101,349
Okeechobee County329.79%43,53539,652
DeSoto County339.42%37,29734,086
Suwannee County349.32%47,58043,524
Indian River County358.98%174,851160,446
Dixie County368.8%18,15516,687
Columbia County378.19%75,44969,740
Hillsborough County387.74%1,579,7461,466,255
Madison County396.87%19,09717,869
Putnam County406.84%78,39373,372
Duval County416.08%1,058,444997,784
Lafayette County425.62%8,6808,218
Orange County435.52%1,510,7261,431,679
Seminole County445.11%495,567471,455
Baker County455.04%29,53228,116
Okaloosa County464.89%222,464212,085
Holmes County474.84%20,52619,578
Jackson County484.8%49,35647,096
Martin County494.6%165,971158,671
Palm Beach County504.51%1,561,6691,494,282
Alachua County513.63%289,900279,737
Escambia County523.25%333,064322,568
Gadsden County533%44,71343,411
Bradford County542.69%28,98228,222
Washington County552.67%25,99625,320
Franklin County562.65%12,79812,468
Broward County572.59%1,993,8151,943,398
Hardee County582.52%25,97825,339
Hamilton County592.16%14,02513,729
Taylor County601.73%22,12021,743
Liberty County611.13%7,8927,804
Union County620.93%15,56815,425
Leon County630.76%296,175293,955
Miami-Dade County640.7%2,714,4892,695,685
Pinellas County650.15%961,204959,793
Calhoun County66-1.66%13,48013,707
Monroe County67-5.12%78,60682,847

Florida County Growth Overview

Florida's counties show varied growth patterns from 2020 to 2025. Sumter County leads with 26.76% annualized growth, followed by St. Johns County (24.93%) and St. Lucie County (21.59%). The largest counties are Miami-Dade County (2,714,489), Broward County (1,993,815), and Hillsborough County (1,579,746). Of the 67 counties in Florida, 65 are growing while just 2 have experienced population decline. Overall, counties averaged 9.61% annualized growth, with total population growing by 8.1% annually.