Is Person County, NC a radon risk area?

EPA's own radon map rates Person County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Person County ranks higher in radon potential than 20% of rated counties (the 20th percentile).

How Person County compares

About 40,143 people live in Person County, North Carolina, spread over 392.34 square miles. That works out to roughly 102 people per square mile. Rank 404 by population within its EPA zone puts Person County at the 61st percentile among zone peers. Person 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

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

If Person County tests above the action level

Nothing about Person County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find North Carolina's state radon program

Person County's test kit answers today; a Airthings radon monitor keeps answering for Person County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 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. Whatever zone Person County carries, the zone explainer covers what it does and doesn't tell you about any one house.