Radon Levels in Minnesota
87 counties — 68 high risk, 19 moderate, 0 low risk
Minnesota Radon Zone Map
Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.
Highest-Risk Counties
BeckerZone 1 — High
Big StoneZone 1 — High
Blue EarthZone 1 — High
BrownZone 1 — High
CarverZone 1 — High
ChippewaZone 1 — High
ClayZone 1 — High
CottonwoodZone 1 — High
DakotaZone 1 — High
DodgeZone 1 — High
DouglasZone 1 — High
FaribaultZone 1 — High
+56 more
Check Your Minnesota ZIP Code
All 87 Counties — By Radon Risk
Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network
Frequently Asked Questions
How many counties in Minnesota have high radon risk?
Minnesota has 68 counties classified as EPA Zone 1 (high radon risk), 19 as Zone 2 (moderate), and 0 as Zone 3 (low risk).
Is radon a problem in Minnesota?
Minnesota has 68 high-risk counties where elevated radon is likely. The EPA recommends all homes in Minnesota be tested for radon, regardless of which zone they're in.
How do I check radon levels for my Minnesota address?
Enter your ZIP code in the search box above to see your county's EPA radon zone and available testing data. For your specific home's radon level, you'll need a radon test kit.