The Florida Association of Counties acquires its population figures from the most recent University of Florida, Bureau of Economic and Business Research (BEBR), data. More Florida population information may be obtained online at http://www.edr.state.fl.us. The square mileage (land only) is obtained from the US Census Bureau. For more information, go to https://data.census.gov/cedsci/.

CountyPopulationSquare MilesCounty Seat
Alachua County271,588875Gainesville
Baker County28,532585Macclenny
Bay County174,410758Panama City
Bradford County28,725294Starke
Brevard County606,6711,016Titusville
Broward County1,932,2121,207Fort Lauderdale
Calhoun County14,489567Blountstown
Charlotte County187,904680Punta Gorda
Citrus County149,383582Inverness
Clay County219,575604Green Cove Springs
Collier County387,4502,002Naples
Columbia County70,617798Lake City
DeSoto County37,082637Arcadia
Dixie County16,663705Cross City
Duval County982,080762Jacksonville
Escambia County323,714656Pensacola
Flagler County114,173485Bunnell
Franklin County11,864535Apalachicola
Gadsden County46,226516Quincy
Gilchrist County18,269350Trenton
Glades County13,609806Moore Haven
Gulf County14,724564Port St. Joe
Hamilton County14,570514Jasper
Hardee County27,443638Wauchula
Hendry County40,9531,153LaBelle
Hernando County192,186473Brooksville
Highlands County104,8341,017Sebring
Hillsborough County1,478,7591,019Tampa
Holmes County20,001478Bonifay
Indian River County158,834503Vero Beach
Jackson County46,587918Marianna
Jefferson County14,394598Monticello
Lafayette County8,690543Mayo
Lake County366,742938Tavares
Lee County750,493785Fort Myers
Leon County299,484667Tallahassee
Levy County41,6991,118Bronson
Liberty County8,575836Bristol
Madison County18,954696Madison
Manatee County398,503743Bradenton
Marion County368,1351,584Ocala
Martin County161,301543Stuart
Miami-Dade County2,832,7941,893Miami
Monroe County77,823979Key West
Nassau County89,258648Fernandina Beach
Okaloosa County203,951930Crestview
Okeechobee County42,112769Okeechobee
Orange County1,415,260903Orlando
Osceola County387,0551,328Kissimmee
Palm Beach County1,466,4941,972West Palm Beach
Pasco County542,638747Dade City
Pinellas County984,054274Clearwater
Polk County715,0901,798Bartow
Putnam County73,723727Palatka
St. Johns County261,900601St. Augustine
St. Lucie County322,265572Fort Pierce
Santa Rosa County184,6531,011Milton
Sarasota County438,816556Sarasota
Seminole County476,727309Sanford
Sumter County141,422547Bushnell
Suwannee County45,463689Live Oak
Taylor County22,4361,043Perry
Union County15,410244Lake Butler
Volusia County551,5881,102DeLand
Wakulla County33,981606Crawfordville
Walton County74,7241,038DeFuniak Springs
Washington County25,334583Chipley