Lawrence County, KY: EPA's radon zone, explained

EPA's own radon map rates Lawrence County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Lawrence County in the 44th percentile nationally for radon potential — higher than 44% of the counties EPA has rated.

Where Lawrence County sits nationally

Lawrence County, Kentucky is home to about 15,798 people across 415.598 square miles. That works out to roughly 38 people per square mile. By population, Lawrence County is the 698th largest of every county sharing its EPA zone — the 32nd percentile by population within that zone. Geologically, Lawrence County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

EPA's Zone 2 rating for Lawrence County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Lawrence County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Next steps for a home in Lawrence County

For a Lawrence County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Kentucky's state radon program

For Lawrence County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Lawrence County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

Where Lawrence County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Lawrence County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.