Is Rowan County, NC a radon risk area?

EPA's own radon map rates Rowan County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Rowan County sits at the 28th percentile nationally for radon potential — above 28 of every 100 rated counties.

Where Rowan County sits nationally

About 153,384 people live in Rowan County, North Carolina, spread over 511.61 square miles. Averaged across its land area, Rowan County runs about 300 people per square mile. Rank 166 by population within its EPA zone puts Rowan County at the 84th percentile among zone peers. EPA's geology-based Region 4 groups Rowan County with 735 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Rowan 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. Don't read Zone 3 as a pass for Rowan County — EPA's guidance to test every home makes no exception for counties predicted low.

Next steps for a home in Rowan County

Nothing about Rowan 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

Rowan County's test kit answers today; a Airthings radon monitor keeps answering for Rowan 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. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.