Is Baldwin County, AL a radon risk area?

EPA places Baldwin 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 30th percentile for radon potential — Baldwin County outranks 30% of every county EPA has rated.

How Baldwin County compares

About 261,608 people live in Baldwin County, Alabama, spread over 1,589.943 square miles. That works out to roughly 165 people per square mile. Rank 99 by population within its EPA zone puts Baldwin County at the 90th percentile among zone peers. Geologically, Baldwin County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

At Zone 3, Baldwin County's predicted county average is under the national indoor average (~1.3 pCi/L) and well below EPA's 4 pCi/L action level — outdoor air nationally runs about 0.4 pCi/L for comparison. Don't read Zone 3 as a pass for Baldwin County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Baldwin County

Nothing about Baldwin 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 Alabama's state radon program

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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.