Radon Zone Map

All counties

Radon zones in Iowa

Adair CountyIowa1
Adams CountyIowa1
Allamakee CountyIowa1
Appanoose CountyIowa1
Audubon CountyIowa1
Benton CountyIowa1
Black Hawk CountyIowa1
Boone CountyIowa1
Bremer CountyIowa1
Buchanan CountyIowa1
Buena Vista CountyIowa1
Butler CountyIowa1
Calhoun CountyIowa1
Carroll CountyIowa1
Cass CountyIowa1
Cedar CountyIowa1
Cerro Gordo CountyIowa1
Cherokee CountyIowa1
Chickasaw CountyIowa1
Clarke CountyIowa1
Clay CountyIowa1
Clayton CountyIowa1
Clinton CountyIowa1
Crawford CountyIowa1
Dallas CountyIowa1
Davis CountyIowa1
Decatur CountyIowa1
Delaware CountyIowa1
Des Moines CountyIowa1
Dickinson CountyIowa1
Dubuque CountyIowa1
Emmet CountyIowa1
Fayette CountyIowa1
Floyd CountyIowa1
Franklin CountyIowa1
Fremont CountyIowa1
Greene CountyIowa1
Grundy CountyIowa1
Guthrie CountyIowa1
Hamilton CountyIowa1
Hancock CountyIowa1
Hardin CountyIowa1
Henry CountyIowa1
Howard CountyIowa1
Humboldt CountyIowa1
Ida CountyIowa1
Jackson CountyIowa1
Jasper CountyIowa1
Jefferson CountyIowa1
Johnson CountyIowa1
Jones CountyIowa1
Keokuk CountyIowa1
Kossuth CountyIowa1
Lee CountyIowa1
Linn CountyIowa1
Louisa CountyIowa1
Lucas CountyIowa1
Lyon CountyIowa1
Madison CountyIowa1
Mahaska CountyIowa1
Marion CountyIowa1
Marshall CountyIowa1
Mills CountyIowa1
Mitchell CountyIowa1
Monroe CountyIowa1
Montgomery CountyIowa1
Muscatine CountyIowa1
Osceola CountyIowa1
Page CountyIowa1
Palo Alto CountyIowa1
Plymouth CountyIowa1
Pocahontas CountyIowa1
Polk CountyIowa1
Pottawattamie CountyIowa1
Poweshiek CountyIowa1
Ringgold CountyIowa1
Sac CountyIowa1
Scott CountyIowa1
Shelby CountyIowa1
Sioux CountyIowa1
Story CountyIowa1
Tama CountyIowa1
Taylor CountyIowa1
Union CountyIowa1
Van Buren CountyIowa1
Wapello CountyIowa1
Warren CountyIowa1
Washington CountyIowa1
Wayne CountyIowa1
Webster CountyIowa1
Winnebago CountyIowa1
Winneshiek CountyIowa1
Worth CountyIowa1
Wright CountyIowa1

Sources

  1. Iowa: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  2. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  3. Iowa: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  4. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  5. Iowa: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  6. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  7. Iowa: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  8. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  9. Iowa: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  10. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  11. Iowa: EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026
  12. EPA Map of Radon Zones, US Environmental Protection Agency, checked 1 November 2026

"Secondary" marks a source used only because the official page could not be read.