Mineral County, WV: EPA's radon zone, explained

Mineral County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Mineral County sits at the 84th percentile nationally for radon potential — above 84 of every 100 rated counties.

Mineral County by the numbers

Mineral County, West Virginia is home to about 26,778 people across 327.882 square miles. That works out to roughly 82 people per square mile. By population, Mineral County is the 496th largest of every county sharing its EPA zone — the 53rd percentile by population within that zone. Mineral County falls in EPA Radon Region 3, one of 245 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Mineral County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Mineral County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. Some Mineral County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Next steps for a home in Mineral County

For a Mineral County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find West Virginia's state radon program

For Mineral County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Mineral County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

Where Mineral County's figures come from

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