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

EPA places Wilkes County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally that's the 6th percentile for radon potential — Wilkes County outranks 6% of every county EPA has rated.

How Wilkes County compares

Wilkes County, Georgia is home to about 9,567 people across 469.504 square miles. Population density there runs about 20 people per square mile. By population, Wilkes County is the 830th largest of every county sharing its EPA zone — the 20th percentile by population within that zone. EPA's geology-based Region 4 groups Wilkes County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Wilkes County

Wilkes County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Wilkes County testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home in Wilkes County

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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.