Is Comanche County, KS a radon risk area?

EPA places Comanche County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Rank it against the rest of the country and Comanche County lands in the 34th percentile for radon potential.

Comanche County by the numbers

About 1,694 people live in Comanche County, Kansas, spread over 788.298 square miles. Averaged across its land area, Comanche County runs about 2 people per square mile. Rank 1012 by population within its EPA zone puts Comanche County at the 2nd percentile among zone peers. Comanche County falls in EPA Radon Region 7, one of 412 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Comanche County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. Middle-of-the-pack doesn't mean risk-free for any one Comanche County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Comanche County

Nothing about Comanche 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 Kansas's state radon program

Comanche County's test kit answers today; a Airthings radon monitor keeps answering for Comanche 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. Whatever zone Comanche County carries, the zone explainer covers what it does and doesn't tell you about any one house.