| | Grant County | OR | 41023 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=GrantCounty+OR |
| | Harney County | OR | 41025 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=HarneyCounty+OR |
| | Hood River County | OR | 41027 | | Hood River, OR 26220 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=HoodRiverCounty+OR |
| | Jefferson County | OR | 41031 | | Bend, OR 13460 | | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=JeffersonCounty+OR |
| | Klamath County | OR | 41035 | | Klamath Falls, OR 28900 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=KlamathCounty+OR |
| | Lake County | OR | 41037 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=LakeCounty+OR |
| | Lane County | OR | 41039 | | Eugene-Springfield, OR 21660 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=LaneCounty+OR |
| | Lincoln County | OR | 41041 | | Newport, OR 35440 | | Central | nonmetro county (rural) | recreation | https://maps.google.com/?q=LincolnCounty+OR |
| | Morrow County | OR | 41049 | | Hermiston-Pendleton, OR 25840 | | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=MorrowCounty+OR |
| | Sherman County | OR | 41055 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=ShermanCounty+OR |