Quick Facts
| County seat | Portland |
|---|---|
| Region | Portland Metro |
| Population (2020 Census) | 795,391 |
| Land & water area | 435 sq mi |
| Population density | 1,828.5 people per sq mi |
| Established | 1854 |
| Formed from | Eastern part of Washington and the northern part of Clackamas counties |
| Name origin | Named for the Multnomah people, a Chinookan band from Sauvie Island. |
| Incorporated cities | 8 |
| Main electric utility | Portland General Electric |
| FIPS code | 41051 |
| Official county website | co.multnomah.or.us |
About Multnomah County
Multnomah County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the county's population was 815,428. Multnomah County is part of the Portland metropolitan area. It is the state's smallest and most populous county, and its county seat, Portland, is the state's most populous city.
Source: adapted from Wikipedia, available under CC BY-SA 4.0.
Cities in Multnomah County
| City | Population (2020) | Incorporated |
|---|---|---|
| Portland ★ | 652,503 | 1851 |
| Gresham | 114,247 | 1904 |
| Lake Oswego | 40,732 | 1910 |
| Milwaukie | 21,119 | 1903 |
| Troutdale | 16,300 | 1907 |
| Fairview | 10,424 | 1908 |
| Wood Village | 4,387 | 1951 |
| Maywood Park | 829 | 1967 |
★ county seat. Cities that span more than one county are listed in each.