Minnesota has 87 counties, with 68 classified as EPA Zone 1 (highest risk). With an average radon level of 7.01 pCi/L, Minnesota state testing data reveals significantly elevated risks across multiple counties. Testing is highly recommended.
Minnesota is the 12th most expansive state in terms of size and the 21st most populous. Interestingly enough, nearly 60% of the state’s residents live in a single area known as the “twin cities,” which is actually the Minneapolis - St Paul metropolitan area.
Minnesota does have an active 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 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 |
|---|---|---|
| Savage | 5.00 pCi/L | 3 |
| Faribault | 10.00 pCi/L | 2 |
| Shakopee | 6.50 pCi/L | 2 |
| Minneapolis | 5.00 pCi/L | 2 |
| Lakeville | 6.00 pCi/L | 1 |
| Delano | 5.00 pCi/L | 1 |
| Montgomery | 5.00 pCi/L | 1 |
| Rosemount | No submissions | 0 |
All 87 Minnesota counties with their EPA radon zone classification and user-submitted average radon levels.
Browse radon data for individual cities across Minnesota. Each city page includes user-submitted radon levels, local contractors, and mitigation resources.