George County, MS: EPA's radon zone, explained

EPA places George 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 16th percentile for radon potential — George County outranks 16% of every county EPA has rated.

How George County compares

George County, Mississippi is home to about 25,880 people across 478.699 square miles. Population density there runs about 54 people per square mile. By population, George County is the 532nd largest of every county sharing its EPA zone — the 48th percentile by population within that zone. George County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in George County

At Zone 3, George 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. Even at Zone 3, George County homes are not guaranteed a low reading — zone is a county-wide average, and EPA recommends testing every home regardless of zone.

If George County tests above the action level

For a George 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 Mississippi's state radon program

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

George County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone George County carries, the zone explainer covers what it does and doesn't tell you about any one house.