21 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Portland | Multnomah County | 627,040 |
| Pendleton | Umatilla County | 17,035 |
| Prineville | Crook County | 12,430 |
| Philomath | Benton County | 6,021 |
| Phoenix | Jackson County | 4,610 |
| Prineville Lake Acres | Crook County | 1,956 |
| Pacific City | Tillamook County | 1,777 |
| Pilot Rock | Umatilla County | 1,302 |
| Port Orford | Curry County | 1,096 |
| Prairie City | Grant County | 807 |
| 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 | 247 |
| Pronghorn | Crook County | 222 |
| Peoria | Linn County | 213 |
| Pine Grove | Wasco County | 83 |
| Prescott | Columbia County | 82 |
| Plush | Lake County | 38 |