Brooke County, WV radon potential

EPA's own radon map rates Brooke County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Rank it against the rest of the country and Brooke County lands in the 82nd percentile for radon potential.

How Brooke County compares

Brooke County, West Virginia is home to about 21,285 people across 89.036 square miles. Population density there runs about 239 people per square mile. Within its own EPA zone, Brooke County is bigger by population than 48% of the counties that share it. Geologically, Brooke County is grouped into EPA Region 3 alongside 244 other counties that share its rock and soil setting.

What this actually means for a house in Brooke County

Brooke County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. Some Brooke 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 Brooke County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find West Virginia's state radon program

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

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