Is Leslie County, KY a radon risk area?

EPA places Leslie 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. Leslie County sits at the 40th percentile nationally for radon potential — above 40 of every 100 rated counties.

Where Leslie County sits nationally

About 9,729 people live in Leslie County, Kentucky, spread over 400.878 square miles. Population density there runs about 24 people per square mile. Rank 825 by population within its EPA zone puts Leslie County at the 20th percentile among zone peers. Leslie County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Leslie County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Nothing about a Zone 2 label lowers the case for testing in Leslie County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Leslie County

Nothing about Leslie 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

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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Leslie County carries, the zone explainer covers what it does and doesn't tell you about any one house.