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State overview

Radon in Florida

Of Florida's 67 counties and county equivalents, EPA places 9 in Zone 2, 58 in Zone 3. Zones are county-wide predictions; testing is the only way to know your home's level.

Radon in the news

Florida stories

Headlines link to the original publishers via Google News. Updated 2026-10-27.

All 67 counties

CountyEPA zone
Alachua CountyZone 2
Baker CountyZone 3
Bay CountyZone 3
Bradford CountyZone 3
Brevard CountyZone 3
Broward CountyZone 3
Calhoun CountyZone 3
Charlotte CountyZone 3
Citrus CountyZone 2
Clay CountyZone 3
Collier CountyZone 3
Columbia CountyZone 2
DeSoto CountyZone 3
Dixie CountyZone 3
Duval CountyZone 3
Escambia CountyZone 3
Flagler CountyZone 3
Franklin CountyZone 3
Gadsden CountyZone 3
Gilchrist CountyZone 3
Glades CountyZone 3
Gulf CountyZone 3
Hamilton CountyZone 3
Hardee CountyZone 3
Hendry CountyZone 3
Hernando CountyZone 3
Highlands CountyZone 3
Hillsborough CountyZone 2
Holmes CountyZone 3
Indian River CountyZone 3
Jackson CountyZone 3
Jefferson CountyZone 3
Lafayette CountyZone 3
Lake CountyZone 3
Lee CountyZone 3
Leon CountyZone 2
Levy CountyZone 3
Liberty CountyZone 3
Madison CountyZone 3
Manatee CountyZone 3
Marion CountyZone 2
Martin CountyZone 3
Miami-Dade CountyZone 2
Monroe CountyZone 3
Nassau CountyZone 3
Okaloosa CountyZone 3
Okeechobee CountyZone 3
Orange CountyZone 3
Osceola CountyZone 3
Palm Beach CountyZone 3
Pasco CountyZone 3
Pinellas CountyZone 3
Polk CountyZone 2
Putnam CountyZone 3
Santa Rosa CountyZone 3
Sarasota CountyZone 3
Seminole CountyZone 3
St. Johns CountyZone 3
St. Lucie CountyZone 3
Sumter CountyZone 3
Suwannee CountyZone 3
Taylor CountyZone 3
Union CountyZone 2
Volusia CountyZone 3
Wakulla CountyZone 3
Walton CountyZone 3
Washington CountyZone 3

Source: EPA radon zones spreadsheet (EPA 402/A-16/001).