Is Itawamba County, MS a radon risk area?

EPA places Itawamba 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 Itawamba County lands in the 15th percentile for radon potential.

Itawamba County by the numbers

About 24,198 people live in Itawamba County, Mississippi, spread over 532.795 square miles. That works out to roughly 45 people per square mile. Rank 550 by population within its EPA zone puts Itawamba County at the 47th percentile among zone peers. Itawamba County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Itawamba County

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

Next steps for a home in Itawamba County

Nothing about Itawamba 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 Mississippi's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Itawamba County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.