Radon Zone Map

All counties

Radon zones in Oregon

Baker CountyOregon2
Benton CountyOregon3
Clackamas CountyOregon3
Clatsop CountyOregon2
Coos CountyOregon3
Crook CountyOregon2
Curry CountyOregon3
Deschutes CountyOregon3
Douglas CountyOregon3
Grant CountyOregon2
Harney CountyOregon2
Hood River CountyOregon2
Jackson CountyOregon3
Jefferson CountyOregon2
Josephine CountyOregon3
Klamath CountyOregon2
Lake CountyOregon2
Lane CountyOregon3
Lincoln CountyOregon3
Linn CountyOregon3
Malheur CountyOregon2
Marion CountyOregon3
Morrow CountyOregon2
Multnomah CountyOregon2
Polk CountyOregon3
Umatilla CountyOregon2
Union CountyOregon2
Wallowa CountyOregon3
Wasco CountyOregon2
Wheeler CountyOregon2
Yamhill CountyOregon2

Sources

  1. Oregon: 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. Oregon: 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. Oregon: 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. Oregon: 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. Oregon: 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. Oregon: 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.