Is Cherokee County, OK a radon risk area?

EPA places Cherokee 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. That puts Cherokee County in the 55th percentile nationally for radon potential — higher than 55% of the counties EPA has rated.

How Cherokee County compares

About 48,729 people live in Cherokee County, Oklahoma, spread over 749.127 square miles. Population density there runs about 65 people per square mile. Rank 346 by population within its EPA zone puts Cherokee County at the 67th percentile among zone peers. EPA's geology-based Region 6 groups Cherokee County with 502 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Cherokee 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. Nothing about a Zone 2 label lowers the case for testing in Cherokee County — EPA recommends it in every zone, moderate included.

If Cherokee County tests above the action level

Nothing about Cherokee 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 Oklahoma's state radon program

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

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.