Bradford County, PA radon potential

Bradford County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. That puts Bradford County in the 91st percentile nationally for radon potential — higher than 91% of the counties EPA has rated.

Where Bradford County sits nationally

Bradford County, Pennsylvania is home to about 59,699 people across 1,147.376 square miles. That works out to roughly 52 people per square mile. Within its own EPA zone, Bradford County is bigger by population than 74% of the counties that share it. Bradford County falls in EPA Radon Region 3, one of 245 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Bradford County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Bradford County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Bradford 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 Bradford County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Bradford County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

Where Bradford County's figures come from

Bradford County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.