Is Forest County, PA a radon risk area?

EPA's own radon map rates Forest County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Forest County in the 37th percentile nationally for radon potential — higher than 37% of the counties EPA has rated.

Forest County by the numbers

About 6,601 people live in Forest County, Pennsylvania, spread over 427.259 square miles. Averaged across its land area, Forest County runs about 15 people per square mile. Rank 909 by population within its EPA zone puts Forest County at the 12th percentile among zone peers. Geologically, Forest 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 Forest County

EPA's Zone 2 rating for Forest County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Forest County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

If Forest County tests above the action level

Nothing about Forest County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Pennsylvania's state radon program

Forest County's test kit answers today; a Airthings radon monitor keeps answering for Forest County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

More on how this number was built

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