Wolfe County, KY: EPA's radon zone, explained

Wolfe 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. Wolfe County sits at the 37th percentile nationally for radon potential — above 37 of every 100 rated counties.

Wolfe County by the numbers

Wolfe County, Kentucky is home to about 6,364 people across 222.159 square miles. Population density there runs about 29 people per square mile. By population, Wolfe County is the 912th largest of every county sharing its EPA zone — the 12th percentile by population within that zone. Wolfe County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Wolfe County's Zone 2 prediction. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Wolfe County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Wolfe County

For a Wolfe 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 Kentucky's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Wolfe County's numbers. Whatever zone Wolfe County carries, the zone explainer covers what it does and doesn't tell you about any one house.