Radon zones in Oregon
Zone 1: 0, Zone 2: 21, Zone 3: 15. A zone is an area estimate; EPA says all homes should be tested.
- Baker County Zone 2
- Benton County Zone 3
- Clackamas County Zone 3
- Clatsop County Zone 2
- Columbia County Zone 2
- Coos County Zone 3
- Crook County Zone 2
- Curry County Zone 3
- Deschutes County Zone 3
- Douglas County Zone 3
- Gilliam County Zone 2
- Grant County Zone 2
- Harney County Zone 2
- Hood River County Zone 2
- Jackson County Zone 3
- Jefferson County Zone 2
- Josephine County Zone 3
- Klamath County Zone 2
- Lake County Zone 2
- Lane County Zone 3
- Lincoln County Zone 3
- Linn County Zone 3
- Malheur County Zone 2
- Marion County Zone 3
- Morrow County Zone 2
- Multnomah County Zone 2
- Polk County Zone 3
- Sherman County Zone 2
- Tillamook County Zone 3
- Umatilla County Zone 2
- Union County Zone 2
- Wallowa County Zone 3
- Wasco County Zone 2
- Washington County Zone 2
- Wheeler County Zone 2
- Yamhill County Zone 2
County not listed? See what we left out and why. Leave your email to hear if this data changes.