Florida has 66 counties, with 0 classified as EPA Zone 1 (highest risk). With an average radon level of 6.7 pCi/L, Florida state testing data reveals significantly elevated risks across multiple counties. Testing is highly recommended.
Florida is the 22nd most expansive state and the fourth most populous. It also happens to be the 8th most densely populated state in the US, likely because many are seeking a warmer climate. Since 1989 the state has required radon measurement and mitigation professionals to be certified and registered. As far as radon exposure, the Florida radon program estimates that in some areas one out of every two homes will show elevated levels.
The state has a commendable Radon program, dedicated to educating citizens about the risks associated with the deadly gas. You can find more information on Radon, testing and mitigation at the official Florida government page.
Explore radon data organized by metro region, including average levels, hotspot cities, and local mitigation professionals.
Cities with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Ocala | 8.31 pCi/L | 16 |
| Gainesville | 7.09 pCi/L | 11 |
| Naples | 7.00 pCi/L | 11 |
| Lakeland | 9.83 pCi/L | 6 |
| Bradenton | 4.80 pCi/L | 5 |
| Alachua | 11.50 pCi/L | 4 |
| Cape Coral | 5.75 pCi/L | 4 |
| Miami | 5.25 pCi/L | 4 |
| North Port | 5.25 pCi/L | 4 |
| Venice | 5.25 pCi/L | 4 |
| Tallahassee | 4.75 pCi/L | 4 |
| Orlando | 4.25 pCi/L | 4 |
| Valrico | 8.33 pCi/L | 3 |
| Bonita Springs | 6.67 pCi/L | 3 |
| Lithia | 5.00 pCi/L | 3 |
| Sarasota | 4.00 pCi/L | 3 |
| Estero | 6.50 pCi/L | 2 |
| Boynton Beach | 20.00 pCi/L | 1 |
| Fort Lauderdale | 14.00 pCi/L | 1 |
| Miami Beach | 10.00 pCi/L | 1 |
All 66 Florida counties with their EPA radon zone classification and user-submitted average radon levels.
Browse radon data for individual cities across Florida. Each city page includes user-submitted radon levels, local contractors, and mitigation resources.