Identifiers: city · CDP · town
| Rank | Community | Population |
|---|---|---|
| 1 | Corvallis (city), OR | 59,922 |
| 2 | Albany (city), OR | 56,472 |
| 3 | Lebanon (city), OR | 18,447 |
| 4 | Sweet Home (city), OR | 9,828 |
| 5 | Jefferson (city), OR | 3,327 |
| 6 | Millersburg (city), OR | 2,919 |
| 7 | Brownsville (city), OR | 1,694 |
| 8 | Tangent (city), OR | 1,231 |
| 9 | South Lebanon (CDP), OR | 1,228 |
| 10 | Halsey (city), OR | 962 |
| 11 | Scio (city), OR | 956 |
| 12 | Lacomb (CDP), OR | 575 |
| 13 | Crabtree (CDP), OR | 406 |
| 14 | Holley (CDP), OR | 390 |
| 15 | Sodaville (city), OR | 360 |
| 16 | Waterloo (town), OR | 222 |
| 17 | Shedd (CDP), OR | 213 |
| 18 | West Scio (CDP), OR | 126 |