Is Long County, GA a radon risk area?

EPA's own radon map rates Long County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. That puts Long County in the 14th percentile nationally for radon potential — higher than 14% of the counties EPA has rated.

Where Long County sits nationally

About 20,439 people live in Long County, Georgia, spread over 400.399 square miles. Averaged across its land area, Long County runs about 51 people per square mile. Rank 607 by population within its EPA zone puts Long County at the 41st percentile among zone peers. Long County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Long County

Long County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. A Zone 3 rating means Long County's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

If Long County tests above the action level

Nothing about Long 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 Georgia's state radon program

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

More on how this number was built

Long County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Long County carries, the zone explainer covers what it does and doesn't tell you about any one house.