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

Raleigh County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally, Raleigh County ranks higher in radon potential than 58% of rated counties (the 58th percentile).

Where Raleigh County sits nationally

Raleigh County, West Virginia is home to about 72,379 people across 604.97 square miles. Averaged across its land area, Raleigh County runs about 120 people per square mile. By population, Raleigh County is the 253rd largest of every county sharing its EPA zone — the 76th percentile by population within that zone. Raleigh 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 Raleigh County

EPA's Zone 2 rating for Raleigh County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. A county-wide moderate average, like Raleigh County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Testing and mitigation in Raleigh County

For a Raleigh 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 Raleigh County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Raleigh 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 Raleigh County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.