- Multnomah County, Oregon (data.census.gov)
Multnomah County, Oregon has 431.0 square miles of land area and is the 36th largest county in Oregon by total area. Multnomah County, Oregon is bordered by Hood River County, Oregon, Washington County, Oregon, Clackamas County, Oregon, Clark County, Washington, Columbia County, Oregon, and Skamania County, Washington.
self-guided tour of the geology
- Multnomah County, Oregon (Wikipedia)
Multnomah County /mʌltˈnoʊmə/ 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.