The graph below ranks each Oregon County by total residents according to the 2012 census estimates.
Oregon total population by county
| County | Total Population |
| Multnomah |  758,932 |
| Washington | 547,543 |
| Clackamas | 383,628 |
| Lane | 354,506 |
| Marion | 321,397 |
| Jackson | 206,512 |
| Deschutes | 161,887 |
| Linn | 118,407 |
| Douglas | 107,166 |
| Yamhill | 100,644 |
| Benton | 86,436 |
| Josephine | 82,813 |
| Umatilla | 76,882 |
| Polk | 76,331 |
| Klamath | 66,071 |
| Coos | 62,637 |
| Columbia | 49,233 |
| Lincoln | 46,174 |
| Clatsop | 37,339 |
| Malheur | 30,632 |
| Union | 25,823 |
| Wasco | 25,470 |
| Tillamook | 25,326 |
| Hood River | 22,597 |
| Curry | 22,274 |
| Jefferson | 21,033 |
| Crook | 20,666 |
| Baker | 15,914 |
| Morrow | 11,259 |
| Lake | 7,785 |
| Grant | 7,317 |
| Harney | 7,228 |
| Wallowa | 6,833 |
| Gilliam | 1,948 |
| Sherman | 1,739 |
| Wheeler | 1,419 |