Wayne County, PA radon potential
EPA places Wayne County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Wayne County in the 55th percentile nationally for radon potential — higher than 55% of the counties EPA has rated.
Wayne County by the numbers
Wayne County, Pennsylvania is home to about 51,419 people across 725.769 square miles. Averaged across its land area, Wayne County runs about 71 people per square mile. Within its own EPA zone, Wayne County is bigger by population than 67% of the counties that share it. Wayne 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 Wayne County
EPA's Zone 2 rating for Wayne 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 Wayne County's, can still hide a specific house well above or below it — testing is what actually answers the question.
Testing and mitigation in Wayne 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 Pennsylvania's state radon program
For Wayne County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Wayne County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.
Where Wayne 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. Whatever zone Wayne County carries, the zone explainer covers what it does and doesn't tell you about any one house.