What EPA's radon map says about Jackson County

EPA places Jackson County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally that's the 54th percentile for radon potential — Jackson County outranks 54% of every county EPA has rated.

How Jackson County compares

About 45,281 people live in Jackson County, North Carolina, spread over 491.137 square miles. Averaged across its land area, Jackson County runs about 92 people per square mile. Among counties sharing Jackson County's EPA zone, it outranks 65% of them by population. Geologically, Jackson County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

What this actually means for a house in Jackson County

Jackson County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. A county-wide moderate average, like Jackson County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Testing and mitigation in Jackson County

Mitigation cost doesn't depend on Jackson County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find North Carolina's state radon program

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

More on how this number was built

Jackson 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.