| | Josephine County | OR | 41033 | | Grants Pass, OR 24420 | Medford-Grants Pass, OR 366 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=JosephineCounty+OR |
| | Klamath County | OR | 41035 | | Klamath Falls, OR 28900 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=KlamathCounty+OR |
| | Lane County | OR | 41039 | | Eugene-Springfield, OR 21660 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=LaneCounty+OR |
| | Multnomah County | OR | 41051 | | Portland-Vancouver-Hillsboro,
OR-WA 38900 | Portland-Vancouver-Salem,
OR-WA 440 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=MultnomahCounty+OR |
| | Polk County | OR | 41053 | | Salem, OR 41420 | Portland-Vancouver-Salem,
OR-WA 440 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=PolkCounty+OR |
| | Umatilla County | OR | 41059 | | Hermiston-Pendleton, OR 25840 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=UmatillaCounty+OR |
| | Wasco County | OR | 41065 | | The Dalles, OR 45520 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=WascoCounty+OR |
| | Yamhill County | OR | 41071 | | Portland-Vancouver-Hillsboro,
OR-WA 38900 | Portland-Vancouver-Salem,
OR-WA 440 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=YamhillCounty+OR |
| | Baker County | OR | 41001 | | Baker City, OR 12520 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=BakerCounty+OR |
| | Clatsop County | OR | 41007 | | Astoria, OR 11820 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=ClatsopCounty+OR |