Is Mineral County, CO a radon risk area?

EPA's own radon map rates Mineral 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 Mineral County lands in the 33rd percentile for radon potential.

How Mineral County compares

About 933 people live in Mineral County, Colorado, spread over 875.76 square miles. Averaged across its land area, Mineral County runs about 1 people per square mile. Rank 1020 by population within its EPA zone puts Mineral County at the 1st percentile among zone peers. Mineral County falls in EPA Radon Region 8, one of 291 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Mineral County

EPA's Zone 2 rating for Mineral County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Nothing about a Zone 2 label lowers the case for testing in Mineral County — EPA recommends it in every zone, moderate included.

Next steps for a home in Mineral County

Nothing about Mineral 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

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

More on how this number was built

Mineral County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Mineral County carries, the zone explainer covers what it does and doesn't tell you about any one house.