Is Weston County, WY a radon risk area?

EPA's own radon map rates Weston County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally, Weston County ranks higher in radon potential than 37% of rated counties (the 37th percentile).

Weston County by the numbers

About 6,866 people live in Weston County, Wyoming, spread over 2,398.005 square miles. Averaged across its land area, Weston County runs about 3 people per square mile. Rank 903 by population within its EPA zone puts Weston County at the 13th percentile among zone peers. Geologically, Weston County is grouped into EPA Region 8 alongside 290 other counties that share its rock and soil setting.

Zone vs. an actual test

EPA's Zone 2 rating for Weston County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Middle-of-the-pack doesn't mean risk-free for any one Weston County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Weston County

Nothing about Weston County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Wyoming's state radon program

Weston County's test kit answers today; a Airthings radon monitor keeps answering for Weston County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Weston County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.