Is Cheyenne County, NE a radon risk area?

EPA's own radon map rates Cheyenne County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally, Cheyenne County ranks higher in radon potential than 39% of rated counties (the 39th percentile).

How Cheyenne County compares

About 9,602 people live in Cheyenne County, Nebraska, spread over 1,196.008 square miles. Averaged across its land area, Cheyenne County runs about 8 people per square mile. Rank 828 by population within its EPA zone puts Cheyenne County at the 20th percentile among zone peers. Geologically, Cheyenne County is grouped into EPA Region 7 alongside 411 other counties that share its rock and soil setting.

Zone vs. an actual test

Cheyenne 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. Cheyenne County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Testing and mitigation in Cheyenne County

Nothing about Cheyenne 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 Nebraska's state radon program

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