19 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Hillsboro | Washington County | 111,150 |
| Happy Valley | Clackamas County | 30,186 |
| Hayesville | Marion County | 22,294 |
| Hermiston | Umatilla County | 19,817 |
| Hood River | Hood River County | 8,357 |
| Harrisburg | Linn County | 3,732 |
| Hubbard | Marion County | 3,394 |
| Heceta Beach | Lane County | 2,653 |
| Harbor | Curry County | 1,906 |
| Hines | Harney County | 1,614 |
| Heppner | Morrow County | 1,100 |
| Halsey | Linn County | 951 |
| Huntington | Baker County | 506 |
| Haines | Baker County | 375 |
| Halfway | Baker County | 358 |
| Holley | Linn County | 273 |
| Hebo | Tillamook County | 243 |
| Harper | Malheur County | 203 |
| Helix | Umatilla County | 191 |