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Counties with the Highest Radon Potential in Kansas

The top 25 of 105 Kansas 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
1Allen County
2
2Anderson County
2
3Barber County
2
4Bourbon County
2
5Butler County
2
6Chase County
2
7Chautauqua County
2
8Cherokee County
2
9Clark County
2
10Coffey County
2
11Comanche County
2
12Cowley County
2
13Crawford County
2
14Doniphan County
2
15Edwards County
2
16Elk County
2
17Franklin County
2
18Greenwood County
2
19Harper County
2
20Harvey County
2
21Jefferson County
2
22Labette County
2
23Linn County
2
24Lyon County
2
25Miami 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 Kansas”, https://gismap.land/rankings/kansas/highest-radon-counties. Figures from EPA Map of Radon Zones (September 2025).

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