Is Goshen County, WY a radon risk area?

EPA places Goshen County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Goshen County sits at the 77th percentile nationally for radon potential — above 77 of every 100 rated counties.

How Goshen County compares

About 12,635 people live in Goshen County, Wyoming, spread over 2,225.613 square miles. That works out to roughly 6 people per square mile. Rank 708 by population within its EPA zone puts Goshen County at the 34th percentile among zone peers. Goshen County falls in EPA Radon Region 8, one of 291 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Where the national indoor average runs about 1.3 pCi/L, Goshen County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Goshen County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Goshen County

Nothing about Goshen 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

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

More on how this number was built

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.