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

EPA's own radon map rates Hancock County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Hancock County ranks higher in radon potential than 6% of rated counties (the 6th percentile).

How Hancock County compares

Hancock County, Georgia is home to about 8,683 people across 471.067 square miles. Population density there runs about 18 people per square mile. By population, Hancock County is the 854th largest of every county sharing its EPA zone — the 17th 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

At Zone 3, Hancock County's predicted county average is under the national indoor average (~1.3 pCi/L) and well below EPA's 4 pCi/L action level — outdoor air nationally runs about 0.4 pCi/L for comparison. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Hancock County testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home 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 Georgia'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.