Is Anderson County, KY a radon risk area?

EPA places Anderson County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Rank it against the rest of the country and Anderson County lands in the 48th percentile for radon potential.

Anderson County by the numbers

About 24,883 people live in Anderson County, Kentucky, spread over 202.26 square miles. Averaged across its land area, Anderson County runs about 123 people per square mile. Rank 554 by population within its EPA zone puts Anderson County at the 46th percentile among zone peers. EPA's geology-based Region 4 groups Anderson County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Anderson County

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Anderson County's Zone 2 prediction. Middle-of-the-pack doesn't mean risk-free for any one Anderson County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Anderson County

Nothing about Anderson 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 Kentucky's state radon program

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

Anderson 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.