What EPA's radon map says about Mitchell County

Mitchell County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally that's the 13th percentile for radon potential — Mitchell County outranks 13% of every county EPA has rated.

Where Mitchell County sits nationally

About 20,329 people live in Mitchell County, Georgia, spread over 512.158 square miles. That works out to roughly 40 people per square mile. Among counties sharing Mitchell County's EPA zone, it outranks 41% of them by population. Geologically, Mitchell 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 Mitchell County

At Zone 3, Mitchell 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. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Mitchell County testing above the action level often enough that skipping a test isn't the safe assumption.

If Mitchell County tests above the action level

Mitigation cost doesn't depend on Mitchell 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 Georgia's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Mitchell County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.