12 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Forest Grove | Washington County | 27,323 |
| Four Corners | Marion County | 16,217 |
| Fairview | Multnomah County | 10,895 |
| Florence | Lane County | 9,511 |
| Falls City | Polk County | 1,057 |
| Foots Creek | Jackson County | 1,029 |
| Falcon Heights | Klamath County | 1,022 |
| Fairview | Multnomah County | 619 |
| Fossil | Wheeler County | 451 |
| Fair Oaks | Douglas County | 186 |
| Fort Klamath | Klamath County | 130 |
| Fort Hill | Polk County | 49 |