Georgetown County, SC radon potential

Georgetown County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. That puts Georgetown County in the 24th percentile nationally for radon potential — higher than 24% of the counties EPA has rated.

Georgetown County by the numbers

Georgetown County, South Carolina is home to about 66,035 people across 813.665 square miles. That works out to roughly 81 people per square mile. Within its own EPA zone, Georgetown County is bigger by population than 73% of the counties that share it. EPA's geology-based Region 4 groups Georgetown County with 735 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Georgetown County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Georgetown County testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home in Georgetown 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 South Carolina's state radon program

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

Where Georgetown County's figures come from

Georgetown 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.