Franklin County, GA radon potential

Franklin 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 that's the 48th percentile for radon potential — Franklin County outranks 48% of every county EPA has rated.

Franklin County by the numbers

Franklin County, Georgia is home to about 25,208 people across 261.342 square miles. That works out to roughly 96 people per square mile. Within its own EPA zone, Franklin County is bigger by population than 47% of the counties that share it. Franklin County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Franklin County's Zone 2 prediction lands in the gap between the two. A county-wide moderate average, like Franklin County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Next steps for a home in Franklin County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Georgia's state radon program

For Franklin County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Franklin 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 Franklin County's figures come from

Franklin County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.