Is Hinsdale County, CO a radon risk area?

EPA's own radon map rates Hinsdale County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Rank it against the rest of the country and Hinsdale County lands in the 33rd percentile for radon potential.

Where Hinsdale County sits nationally

About 747 people live in Hinsdale County, Colorado, spread over 1,117.231 square miles. Population density there runs about 1 people per square mile. Rank 1026 by population within its EPA zone puts Hinsdale County at the 1st percentile among zone peers. Hinsdale County falls in EPA Radon Region 8, one of 291 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

EPA's Zone 2 rating for Hinsdale 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 Hinsdale County address — a moderate county average still leaves individual homes to test either side of it.

Testing and mitigation in Hinsdale County

Nothing about Hinsdale 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 Colorado's state radon program

Hinsdale County's test kit answers today; a Airthings radon monitor keeps answering for Hinsdale 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

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.