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

Hancock County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally, Hancock County ranks higher in radon potential than 39% of rated counties (the 39th percentile).

Where Hancock County sits nationally

Hancock County, Kentucky is home to about 9,013 people across 187.675 square miles. Population density there runs about 48 people per square mile. By population, Hancock County is the 840th largest of every county sharing its EPA zone — the 19th percentile by population within that zone. Geologically, Hancock County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Zone vs. an actual test

Hancock 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 Hancock County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Hancock County

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

Where Hancock County's figures come from

Hancock 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.