Is Warren County, NY a radon risk area?

EPA's own radon map rates Warren County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Warren County ranks higher in radon potential than 24% of rated counties (the 24th percentile).

Where Warren County sits nationally

About 65,288 people live in Warren County, New York, spread over 867.222 square miles. Averaged across its land area, Warren County runs about 75 people per square mile. Rank 288 by population within its EPA zone puts Warren County at the 72nd percentile among zone peers. Geologically, Warren County is grouped into EPA Region 2 alongside 82 other counties that share its rock and soil setting.

Zone vs. an actual test

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Warren County's Zone 3 prediction is the low end of the scale. A Zone 3 rating means Warren 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.

Next steps for a home in Warren County

Nothing about Warren 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 New York's state radon program

Warren County's test kit answers today; a Airthings radon monitor keeps answering for Warren 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

Warren County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.