Is Atoka County, OK a radon risk area?

EPA's own radon map rates Atoka County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Atoka County ranks higher in radon potential than 10% of rated counties (the 10th percentile).

How Atoka County compares

About 14,600 people live in Atoka County, Oklahoma, spread over 975.454 square miles. Population density there runs about 15 people per square mile. Rank 718 by population within its EPA zone puts Atoka County at the 30th percentile among zone peers. Geologically, Atoka County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

Zone vs. an actual test

Atoka County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Even at Zone 3, Atoka County homes are not guaranteed a low reading — zone is a county-wide average, and EPA recommends testing every home regardless of zone.

If Atoka County tests above the action level

Nothing about Atoka 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

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

Atoka County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.