What EPA's radon map says about Choctaw County

EPA places Choctaw County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 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 Choctaw County lands in the 8th percentile for radon potential.

Choctaw County by the numbers

About 12,052 people live in Choctaw County, Alabama, spread over 913.479 square miles. That works out to roughly 13 people per square mile. Among counties sharing Choctaw County's EPA zone, it outranks 25% of them by population. Geologically, Choctaw County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

What this actually means for a house in Choctaw County

At Zone 3, Choctaw County's predicted county average is under the national indoor average (~1.3 pCi/L) and well below EPA's 4 pCi/L action level — outdoor air nationally runs about 0.4 pCi/L for comparison. A Zone 3 rating means Choctaw County's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

Next steps for a home in Choctaw County

Mitigation cost doesn't depend on Choctaw County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Alabama's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Choctaw County's numbers. Whatever zone Choctaw County carries, the zone explainer covers what it does and doesn't tell you about any one house.