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

EPA's own radon map rates Scott County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Rank it against the rest of the country and Scott County lands in the 91st percentile for radon potential.

How Scott County compares

Scott County, Kentucky is home to about 61,700 people across 282.194 square miles. Averaged across its land area, Scott County runs about 219 people per square mile. By population, Scott County is the 268th largest of every county sharing its EPA zone — the 75th percentile by population within that zone. EPA's geology-based Region 4 groups Scott County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Scott County

Scott County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. Some Scott 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.

If Scott County tests above the action level

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

Where Scott County's figures come from

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