Oregon Counties by Population (2026)
2026 Pop.
100K
200K
300K
400K
500K
600K
700K
Top 5 Most Populous Counties
796,310
614,803
427,315
381,087
358,336
| County | 2026 Pop. ↓ | Area (mi²) | Density (/mi²) | Change (2020) |
|---|---|---|---|---|
| Multnomah County | 796,310 | 431 | 1,848 | -2.44% |
| Washington County | 614,803 | 724 | 849 | 2.3% |
| Clackamas County | 427,315 | 1.9K | 228 | 1.14% |
| Lane County | 381,087 | 4.6K | 84 | -0.82% |
| Marion County | 358,336 | 1.2K | 303 | 3.48% |
| Jackson County | 222,243 | 2.8K | 80 | -0.67% |
| Deschutes County | 214,942 | 3K | 71 | 7.76% |
| Linn County | 133,102 | 2.3K | 58 | 3.22% |
| Douglas County | 111,551 | 5K | 22 | 0.23% |
| Yamhill County | 109,983 | 716 | 154 | 2.13% |
| Benton County | 97,866 | 675 | 145 | 4.56% |
| Polk County | 89,869 | 741 | 121 | 2.14% |
| Josephine County | 87,591 | 1.6K | 53 | -0.71% |
| Umatilla County | 81,280 | 3.2K | 25 | 1.74% |
| Klamath County | 70,177 | 6K | 12 | 0.79% |
| Coos County | 63,742 | 1.6K | 40 | -1.91% |
| Columbia County | 54,217 | 659 | 82 | 2.85% |
| Lincoln County | 50,519 | 981 | 51 | 0.02% |
| Clatsop County | 40,646 | 828 | 49 | -1.24% |
| Malheur County | 32,151 | 9.9K | 3.3 | 1.58% |
| Crook County | 27,808 | 3K | 9.3 | 11.53% |
| Tillamook County | 27,346 | 1.1K | 25 | -0.4% |
| Wasco County | 26,159 | 2.4K | 11 | -1.71% |
| Union County | 25,855 | 2K | 13 | -1.21% |
| Jefferson County | 25,795 | 1.8K | 14 | 4.93% |
| Hood River County | 23,707 | 522 | 45 | -0.8% |
| Curry County | 22,422 | 1.6K | 14 | -4.66% |
| Baker County | 16,559 | 3.1K | 5.4 | -1.01% |
| Morrow County | 12,750 | 2K | 6.3 | 4.35% |
| Lake County | 8,207 | 8.1K | 1.0 | 0.45% |
| Wallowa County | 7,592 | 3.1K | 2.4 | 2.55% |
| Harney County | 7,337 | 10.1K | 0.72 | -2.26% |
| Grant County | 7,046 | 4.5K | 1.6 | -2.68% |
| Sherman County | 2,087 | 824 | 2.5 | 11.01% |
| Gilliam County | 1,958 | 1.2K | 1.6 | -2.78% |
| Wheeler County | 1,490 | 1.7K | 0.87 | 2.05% |
Sources
- US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
- American Community Survey (2009 - 2013)
- Census QuickFacts
- Historical Populations of States and Counties (1790 - 1990)