| City | County | 2026 Pop. ↓ |
|---|---|---|
| Portland | Multnomah County | 630,447 |
| Pendleton | Umatilla County | 17,008 |
| Prineville | Crook County | 12,246 |
| Philomath | Benton County | 5,790 |
| Phoenix | Jackson County | 4,936 |
| Prineville Lake Acres | Crook County | 1,956 |
| Pacific City | Tillamook County | 1,777 |
| Pilot Rock | Umatilla County | 1,317 |
| Port Orford | Curry County | 1,091 |
| Prairie City | Grant County | 814 |
| Prospect | Jackson County | 786 |
| Pleasant Valley | Tillamook County | 725 |
| Powers | Coos County | 700 |
| Pine Hollow | Wasco County | 467 |
| Parkdale | Hood River County | 267 |
| Paisley | Lake County | 248 |
| Pronghorn | Crook County | 222 |
| Peoria | Linn County | 213 |
| Pine Grove | Wasco County | 83 |
| Prescott | Columbia County | 81 |
| Plush | Lake County | 38 |