Radon in Kansas

Of Kansas's 105 counties and county equivalents, EPA places 65 in Zone 1, 40 in Zone 2. Zones are county-wide predictions; testing is the only way to know your home's level.

Radon in the news

Kansas stories

Prevent lung cancer by testing your home for radon; Kansas level above average
Hays Post · 2025-01-13

Headlines link to the original publishers via Google News. Updated 2026-10-27.

All 105 counties

County	EPA zone
Allen County	Zone 2
Anderson County	Zone 2
Atchison County	Zone 1
Barber County	Zone 2
Barton County	Zone 1
Bourbon County	Zone 2
Brown County	Zone 1
Butler County	Zone 2
Chase County	Zone 2
Chautauqua County	Zone 2
Cherokee County	Zone 2
Cheyenne County	Zone 1
Clark County	Zone 2
Clay County	Zone 1
Cloud County	Zone 1
Coffey County	Zone 2
Comanche County	Zone 2
Cowley County	Zone 2
Crawford County	Zone 2
Decatur County	Zone 1
Dickinson County	Zone 1
Doniphan County	Zone 2
Douglas County	Zone 1
Edwards County	Zone 2
Elk County	Zone 2
Ellis County	Zone 1
Ellsworth County	Zone 1
Finney County	Zone 1
Ford County	Zone 1
Franklin County	Zone 2
Geary County	Zone 1
Gove County	Zone 1
Graham County	Zone 1
Grant County	Zone 1
Gray County	Zone 1
Greeley County	Zone 1
Greenwood County	Zone 2
Hamilton County	Zone 1
Harper County	Zone 2
Harvey County	Zone 2
Haskell County	Zone 1
Hodgeman County	Zone 1
Jackson County	Zone 1
Jefferson County	Zone 2
Jewell County	Zone 1
Johnson County	Zone 1
Kearny County	Zone 1
Kingman County	Zone 1
Kiowa County	Zone 1
Labette County	Zone 2
Lane County	Zone 1
Leavenworth County	Zone 1
Lincoln County	Zone 1
Linn County	Zone 2
Logan County	Zone 1
Lyon County	Zone 2
Marion County	Zone 1
Marshall County	Zone 1
McPherson County	Zone 1
Meade County	Zone 1
Miami County	Zone 2
Mitchell County	Zone 1
Montgomery County	Zone 2
Morris County	Zone 2
Morton County	Zone 2
Nemaha County	Zone 1
Neosho County	Zone 2
Ness County	Zone 1
Norton County	Zone 1
Osage County	Zone 2
Osborne County	Zone 1
Ottawa County	Zone 1
Pawnee County	Zone 1
Phillips County	Zone 1
Pottawatomie County	Zone 1
Pratt County	Zone 1
Rawlins County	Zone 1
Reno County	Zone 2
Republic County	Zone 1
Rice County	Zone 1
Riley County	Zone 1
Rooks County	Zone 1
Rush County	Zone 1
Russell County	Zone 1
Saline County	Zone 1
Scott County	Zone 1
Sedgwick County	Zone 2
Seward County	Zone 2
Shawnee County	Zone 2
Sheridan County	Zone 1
Sherman County	Zone 1
Smith County	Zone 1
Stafford County	Zone 2
Stanton County	Zone 1
Stevens County	Zone 2
Sumner County	Zone 2
Thomas County	Zone 1
Trego County	Zone 1
Wabaunsee County	Zone 2
Wallace County	Zone 1
Washington County	Zone 1
Wichita County	Zone 1
Wilson County	Zone 2
Woodson County	Zone 2
Wyandotte County	Zone 1

Source: EPA radon zones spreadsheet (EPA 402/A-16/001).