| | | Baker County | OR | 41001 | | | | Non-metropolitan | nonmetro county (rural) | recreation | https://maps.google.com/?q=BakerCounty+OR |
| | | Benton County | OR | 41003 | | Corvallis, OR 18700 | Portland-Vancouver-Salem,
OR-WA 440 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=BentonCounty+OR |
| | | Clackamas County | OR | 41005 | | Portland-Vancouver-Hillsboro,
OR-WA 38900 | Portland-Vancouver-Salem,
OR-WA 440 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=ClackamasCounty+OR |
| | | Clatsop County | OR | 41007 | | Astoria, OR 11820 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=ClatsopCounty+OR |
| | | Columbia County | OR | 41009 | | Portland-Vancouver-Hillsboro,
OR-WA 38900 | Portland-Vancouver-Salem,
OR-WA 440 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=ColumbiaCounty+OR |
| | | Coos County | OR | 41011 | | Coos Bay, OR 18300 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=CoosCounty+OR |
| | | Crook County | OR | 41013 | | Prineville, OR 39260 | Bend-Redmond-Prineville,
OR 140 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=CrookCounty+OR |
| | | Curry County | OR | 41015 | | Brookings, OR 15060 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=CurryCounty+OR |
| | | Deschutes County | OR | 41017 | | Bend-Redmond, OR 13460 | Bend-Redmond-Prineville,
OR 140 | Central | metro county (urban) | recreation | https://maps.google.com/?q=DeschutesCounty+OR |
| | | Douglas County | OR | 41019 | | Roseburg, OR 40700 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=DouglasCounty+OR |
