Fulton County, PA radon potential

EPA's own radon map rates Fulton County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 79th percentile for radon potential — Fulton County outranks 79% of every county EPA has rated.

Where Fulton County sits nationally

Fulton County, Pennsylvania is home to about 14,452 people across 437.551 square miles. That works out to roughly 33 people per square mile. Within its own EPA zone, Fulton County is bigger by population than 37% of the counties that share it. EPA's geology-based Region 3 groups Fulton County with 244 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Fulton County carries a Zone 1 label because its predicted average clears 4 pCi/L outright — three-plus times the 0.4 pCi/L typical outdoors and above the 1.3 pCi/L most homes see. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Fulton County specifically.

Next steps for a home in Fulton 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 Fulton County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Fulton 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 Fulton County's figures come from

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