| population | |
| Baker County | 16847 |
| Benton County | 96017 |
| Clackamas County | 422537 |
| Clatsop County | 41810 |
| Columbia County | 53074 |
| Coos County | 64999 |
| Crook County | 20978 |
| Curry County | 23683 |
| Deschutes County | 204801 |
| Douglas County | 111978 |
| Gilliam County | 2005 |
| Grant County | 7272 |
| population | |
| Harney County | 7575 |
| Hood River County | 22346 |
| Jackson County | 223734 |
| Jefferson County | 25068 |
| Josephine County | 88346 |
| Klamath County | 70164 |
| Lake County | 8276 |
| Lane County | 383189 |
| Lincoln County | 50862 |
| Linn County | 129839 |
| Malheur County | 31693 |
| Marion County | 347119 |
| population | |
| Morrow County | 12303 |
| Multnomah County | 803377 |
| Polk County | 89164 |
| Sherman County | 1907 |
| Tillamook County | 27748 |
| Umatilla County | 79988 |
| Union County | 26212 |
| Wallowa County | 7545 |
| Wasco County | 26726 |
| Washington County | 600811 |
| Wheeler County | 1451 |
| Yamhill County | 108239 |
 | Prineville Airport | ~ 45.27 km |
| Roberts Field | ~ 58.97 km |
| Sunriver Airport | ~ 77.43 km |
| Madras Municipal Airport | ~ 90.85 km |
| Grant County Regional Airport / Ogilvie Field | ~ 130.60 km |
| Burns Municipal Airport | ~ 132.20 km |
| Columbia Gorge Regional Airport | ~ 187.80 km |
| Chiloquin State Airport | ~ 193.36 km |
| Lake County Airport | ~ 204.66 km |
