Radon Levels in Wyoming
23 counties — 21 high risk, 2 moderate, 0 low risk
Wyoming Radon Zone Map
Counties colored by EPA radon zone. Red = Zone 1, Orange = Zone 2, Green = Zone 3.
Highest-Risk Counties
AlbanyZone 1 — High
Big HornZone 1 — High
CampbellZone 1 — High
CarbonZone 1 — High
ConverseZone 1 — High
CrookZone 1 — High
FremontZone 1 — High
GoshenZone 1 — High
Hot SpringsZone 1 — High
JohnsonZone 1 — High
Laramie31.2% above action level
LincolnZone 1 — High
+9 more
Check Your Wyoming ZIP Code
All 23 Counties — By Radon Risk
Sources: EPA Map of Radon Zones, CDC Environmental Health Tracking Network
Frequently Asked Questions
How many counties in Wyoming have high radon risk?
Wyoming has 21 counties classified as EPA Zone 1 (high radon risk), 2 as Zone 2 (moderate), and 0 as Zone 3 (low risk).
Is radon a problem in Wyoming?
Wyoming has 21 high-risk counties where elevated radon is likely. The EPA recommends all homes in Wyoming be tested for radon, regardless of which zone they're in.
How do I check radon levels for my Wyoming 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.