| City | County | 2025 Pop. ↓ |
|---|---|---|
| Portland | Multnomah County | 615,267 |
| Pendleton | Umatilla County | 17,467 |
| Prineville | Crook County | 12,318 |
| Philomath | Benton County | 5,963 |
| Phoenix | Jackson County | 4,377 |
| Pacific City | Tillamook County | 1,950 |
| Prineville Lake Acres | Crook County | 1,582 |
| Pilot Rock | Umatilla County | 1,287 |
| Port Orford | Curry County | 1,125 |
| Prairie City | Grant County | 833 |
| Prospect | Jackson County | 712 |
| Powers | Coos County | 707 |
| Pleasant Valley | Tillamook County | 636 |
| Pine Hollow | Wasco County | 478 |
| Paisley | Lake County | 259 |
| Pronghorn | Crook County | 229 |
| Parkdale | Hood River County | 189 |
| Plush | Lake County | 84 |
| Prescott | Columbia County | 80 |
| Pine Grove | Wasco County | 78 |
| Peoria | Linn County | 40 |