Is Surry County, NC a radon risk area?

EPA's own radon map rates Surry County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Surry County in the 58th percentile nationally for radon potential — higher than 58% of the counties EPA has rated.

How Surry County compares

About 71,547 people live in Surry County, North Carolina, spread over 532.644 square miles. Averaged across its land area, Surry County runs about 134 people per square mile. Rank 256 by population within its EPA zone puts Surry County at the 75th percentile among zone peers. EPA's geology-based Region 4 groups Surry County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Surry County

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Surry County's Zone 2 prediction. A county-wide moderate average, like Surry County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Next steps for a home in Surry County

Nothing about Surry 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

Surry County's test kit answers today; a Airthings radon monitor keeps answering for Surry 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

Surry County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.