What EPA's radon map says about Neshoba County

EPA places Neshoba 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. Nationally, Neshoba County ranks higher in radon potential than 17% of rated counties (the 17th percentile).

How Neshoba County compares

About 28,973 people live in Neshoba County, Mississippi, spread over 570.134 square miles. That works out to roughly 51 people per square mile. Among counties sharing Neshoba County's EPA zone, it outranks 52% of them by population. Neshoba 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 Neshoba County

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Neshoba County's Zone 3 prediction is the low end of the scale. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Neshoba County testing above the action level often enough that skipping a test isn't the safe assumption.

Testing and mitigation in Neshoba County

Mitigation cost doesn't depend on Neshoba 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 Mississippi's state radon program

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

Neshoba County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Neshoba County carries, the zone explainer covers what it does and doesn't tell you about any one house.