| City | County | 2025 Pop. ↓ |
|---|---|---|
| Redmond | Deschutes County | 39,164 |
| Roseburg | Douglas County | 23,983 |
| River Road | Lane County | 10,844 |
| Rockcreek | Multnomah County | 10,075 |
| Raleigh Hills | Washington County | 6,947 |
| Reedsport | Douglas County | 4,321 |
| Roseburg North | Douglas County | 4,120 |
| Redwood | Jackson County | 3,437 |
| Rogue River | Jackson County | 2,319 |
| Rainier | Columbia County | 1,938 |
| Ruch | Jackson County | 1,500 |
| Rockaway Beach | Tillamook County | 1,446 |
| Rose Lodge | Lincoln County | 1,390 |
| Riddle | Douglas County | 1,231 |
| Running Y Ranch | Klamath County | 1,040 |
| Rivergrove | Clackamas County | 527 |
| Riverside | Malheur County | 390 |
| Rocky Point | Klamath County | 385 |
| River Point | Clatsop County | 292 |
| Rufus | Sherman County | 285 |
| Rhododendron | Clackamas County | 184 |
| Richland | Baker County | 171 |
| Rowena | Wasco County | 104 |