Beaufort County, NC: EPA's radon zone, explained

EPA's own radon map rates Beaufort County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. That puts Beaufort County in the 21st percentile nationally for radon potential — higher than 21% of the counties EPA has rated.

How Beaufort County compares

Beaufort County, North Carolina is home to about 44,576 people across 832.711 square miles. Population density there runs about 54 people per square mile. By population, Beaufort County is the 373rd largest of every county sharing its EPA zone — the 64th percentile by population within that zone. Beaufort 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

A Zone 3 county like Beaufort County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Beaufort County testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home in Beaufort County

For a Beaufort 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 North Carolina's state radon program

For Beaufort County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Beaufort County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

Where Beaufort County's figures come from

Beaufort County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.