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Counties with the Highest Radon Potential in Alabama

The top 25 of 67 Alabama counties on GIS Map, ranked by EPA radon zone, where zone 1 carries the highest predicted indoor radon potential and zone 3 the lowest.

#CountyEPA radon zone
1Baldwin County
3
2Butler County
3
3Chambers County
3
4Choctaw County
3
5Clarke County
3
6Coffee County
3
7Conecuh County
3
8Covington County
3
9Crenshaw County
3
10Dale County
3
11Escambia County
3
12Geneva County
3
13Henry County
3
14Houston County
3
15Marengo County
3
16Mobile County
3
17Monroe County
3
18Pike County
3
19Tallapoosa County
3
20Washington County
3
21Wilcox County
3
22Autauga County
2
23Barbour County
2
24Bibb County
2
25Blount County
2

Source: EPA Map of Radon Zones (September 2025). All counties with data are ranked. Estimates carry margins of error.

Citing this page: GIS Map, “Counties with the Highest Radon Potential in Alabama”, https://gismap.land/rankings/alabama/highest-radon-counties. Figures from EPA Map of Radon Zones (September 2025).

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