Is Halifax County, NC a radon risk area?

EPA places Halifax 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 22nd percentile for radon potential — Halifax County outranks 22% of every county EPA has rated.

Halifax County by the numbers

About 46,992 people live in Halifax County, North Carolina, spread over 723.738 square miles. Averaged across its land area, Halifax County runs about 65 people per square mile. Rank 358 by population within its EPA zone puts Halifax County at the 65th percentile among zone peers. EPA's geology-based Region 4 groups Halifax County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

A Zone 3 county like Halifax County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. Even at Zone 3, Halifax County homes are not guaranteed a low reading — zone is a county-wide average, and EPA recommends testing every home regardless of zone.

If Halifax County tests above the action level

Nothing about Halifax 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

Halifax County's test kit answers today; a Airthings radon monitor keeps answering for Halifax County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Halifax County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.