What EPA's radon map says about Russell County

EPA places Russell County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Russell County in the 81st percentile nationally for radon potential — higher than 81% of the counties EPA has rated.

Russell County by the numbers

About 18,458 people live in Russell County, Kentucky, spread over 253.26 square miles. Population density there runs about 73 people per square mile. Among counties sharing Russell County's EPA zone, it outranks 44% of them by population. Russell County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Russell County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. Some Russell County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Testing and mitigation in Russell County

Mitigation cost doesn't depend on Russell County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Kentucky's state radon program

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

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. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.