19 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Tigard | Washington County | 58,434 |
| Tualatin | Washington County | 28,112 |
| The Dalles | Wasco County | 15,835 |
| Troutdale | Multnomah County | 15,471 |
| Talent | Jackson County | 6,303 |
| Tillamook | Tillamook County | 5,125 |
| Tri-City | Douglas County | 4,461 |
| Three Rivers | Deschutes County | 4,186 |
| Toledo | Lincoln County | 3,495 |
| Turner | Marion County | 2,396 |
| Terrebonne | Jefferson County | 1,426 |
| Tangent | Linn County | 1,254 |
| Tetherow | Deschutes County | 923 |
| Takilma | Josephine County | 731 |
| Trail | Jackson County | 640 |
| Tumalo | Deschutes County | 610 |
| Trent | Lane County | 508 |
| Tutuilla | Umatilla County | 371 |
| Tygh Valley | Wasco County | 116 |