What EPA's radon map says about Terrell County

Terrell County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally, Terrell County ranks higher in radon potential than 6% of rated counties (the 6th percentile).

Terrell County by the numbers

About 8,698 people live in Terrell County, Georgia, spread over 335.791 square miles. Population density there runs about 26 people per square mile. Among counties sharing Terrell County's EPA zone, it outranks 17% of them by population. EPA's geology-based Region 4 groups Terrell County with 735 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Terrell County's Zone 3 prediction is the low end of the scale. Don't read Zone 3 as a pass for Terrell County — EPA's guidance to test every home makes no exception for counties predicted low.

Next steps for a home in Terrell County

Mitigation cost doesn't depend on Terrell County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Georgia's state radon program

Terrell County's test kit answers today; a Airthings radon monitor keeps answering for Terrell County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

More on how this number was built

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.