Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Hillsboro (city), OR | 106,447 |
| 2 | Beaverton (city), OR | 97,494 |
| 3 | Aloha (CDP), OR | 53,828 |
| 4 | Bethany (CDP), OR | 31,350 |
| 5 | Forest Grove (city), OR | 26,225 |
| 6 | Cedar Mill (CDP), OR | 17,259 |
| 7 | Cornelius (city), OR | 12,694 |
| 8 | Oak Hills (CDP), OR | 11,903 |
| 9 | Bull Mountain (CDP), OR | 9,992 |
| 10 | Rockcreek (CDP), OR | 9,862 |
| 11 | West Haven-Sylvan (CDP), OR | 9,299 |
| 12 | Cedar Hills (CDP), OR | 8,379 |
| 13 | West Slope (CDP), OR | 7,223 |
| 14 | Marlene Village (CDP), OR | 5,485 |
| 15 | North Plains (city), OR | 3,441 |
| 16 | Carlton (city), OR | 2,220 |
| 17 | Banks (city), OR | 1,837 |
| 18 | Yamhill (city), OR | 1,147 |
| 19 | Gaston (city), OR | 676 |
| 20 | Cherry Grove (CDP), OR | 503 |