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RadonVerdict
EPA Zone Data 2026

MO Radon Levels

View EPA radon zone classifications for every county in MO. Select your county to see detailed risk data, testing recommendations, and mitigation cost estimates.

11
Zone 1
High Risk
97
Zone 2
Moderate
7
Zone 3
Low Risk
Adair Zone 2
Andrew Zone 1
Atchison Zone 1
Audrain Zone 2
Barry Zone 2
Barton Zone 2
Bates Zone 2
Benton Zone 2
Bollinger Zone 2
Boone Zone 2
Buchanan Zone 1
Butler Zone 3
Caldwell Zone 2
Callaway Zone 2
Camden Zone 2
Cape Girardeau Zone 2
Carroll Zone 2
Carter Zone 2
Cass Zone 1
Cedar Zone 2
Chariton Zone 2
Christian Zone 2
Clark Zone 2
Clay Zone 1
Clinton Zone 1
Cole Zone 2
Cooper Zone 2
Crawford Zone 2
Dade Zone 2
Dallas Zone 2
Daviess Zone 2
DeKalb Zone 2
Dent Zone 2
Douglas Zone 2
Dunklin Zone 3
Franklin Zone 2
Gasconade Zone 2
Gentry Zone 2
Greene Zone 2
Grundy Zone 2
Harrison Zone 2
Henry Zone 2
Hickory Zone 2
Holt Zone 1
Howard Zone 2
Howell Zone 2
Iron Zone 1
Jackson Zone 1
Jasper Zone 2
Jefferson Zone 2
Johnson Zone 2
Knox Zone 2
Laclede Zone 2
Lafayette Zone 2
Lawrence Zone 2
Lewis Zone 2
Lincoln Zone 2
Linn Zone 2
Livingston Zone 2
Macon Zone 2
Madison Zone 2
Maries Zone 2
Marion Zone 2
McDonald Zone 2
Mercer Zone 2
Miller Zone 2
Mississippi Zone 3
Moniteau Zone 2
Monroe Zone 2
Montgomery Zone 2
Morgan Zone 2
New Madrid Zone 3
Newton Zone 2
Nodaway Zone 1
Oregon Zone 2
Osage Zone 2
Ozark Zone 2
Pemiscot Zone 3
Perry Zone 2
Pettis Zone 2
Phelps Zone 2
Pike Zone 2
Platte Zone 1
Polk Zone 2
Pulaski Zone 2
Putnam Zone 2
Ralls Zone 2
Randolph Zone 2
Ray Zone 2
Reynolds Zone 2
Ripley Zone 2
Saline Zone 2
Schuyler Zone 2
Scotland Zone 2
Scott Zone 3
Shannon Zone 2
Shelby Zone 2
St. Charles Zone 2
St. Clair Zone 2
St. Francois Zone 2
St. Louis Zone 2
St. Louis Zone 2
Ste. Genevieve Zone 2
Stoddard Zone 3
Stone Zone 2
Sullivan Zone 2
Taney Zone 2
Texas Zone 2
Vernon Zone 2
Warren Zone 2
Washington Zone 2
Wayne Zone 2
Webster Zone 2
Worth Zone 2
Wright Zone 2

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