| City | County | 2026 Pop. ↓ |
|---|---|---|
| Redmond | Deschutes County | 39,492 |
| Roseburg | Douglas County | 23,729 |
| River Road | Lane County | 10,415 |
| Rockcreek | Multnomah County | 9,497 |
| Raleigh Hills | Washington County | 6,847 |
| Reedsport | Douglas County | 4,267 |
| Roseburg North | Douglas County | 4,051 |
| Redwood | Jackson County | 3,271 |
| Rogue River | Jackson County | 2,273 |
| Rainier | Columbia County | 1,928 |
| Ruch | Jackson County | 1,622 |
| Rockaway Beach | Tillamook County | 1,455 |
| Riddle | Douglas County | 1,220 |
| Running Y Ranch | Klamath County | 1,035 |
| Rose Lodge | Lincoln County | 1,023 |
| Rivergrove | Clackamas County | 533 |
| Riverside | Malheur County | 406 |
| Rocky Point | Klamath County | 401 |
| River Point | Clatsop County | 379 |
| Rufus | Sherman County | 297 |
| Rhododendron | Clackamas County | 252 |
| Richland | Baker County | 169 |
| Rowena | Wasco County | 114 |