Facts about Multnomah County, Oregon
Multnomah County is one of 36 counties in the U.S. state of Oregon. As of the 2010 United States Census, the county's population was 735,334. Its county seat, Portland, is the state's largest city.
According to the United States Census Bureau, the county has a total area of 466 square miles (1,210 km²), of which 431 square miles (1,120 km²) is land and 34 square miles (88 km²) (7.4%) is water. It is the smallest county in Oregon by area. It is located along the south side of the Columbia River.
As of the 2010 United States Census, there were 735,334 people, 304,540 households, and 163,539 families residing in the county. The population density was 1,704.9 inhabitants per square mile (658.3/km²). There were 324,832 housing units at an average density of 753.2 per square mile (290.8/km²). The racial makeup of the county was 76.5% white, 6.5% Asian, 5.6% black or African American, 1.1% American Indian, 0.5% Pacific islander, 5.1% from other races, and 4.6% from two or more races. Those of Hispanic or Latino origin made up 10.9% of the population. In terms of ancestry, 19.4% were German, 12.2% were Irish, 11.4% were English, and 4.2% were American.
Of the 304,540 households, 27.0% had children under the age of 18 living with them, 38.6% were married couples living together, 10.7% had a female householder with no husband present, 46.3% were non-families, and 32.6% of all households were made up of individuals. The average household size was 2.35 and the average family size was 3.03. The median age was 35.7 years.
Serving Multnomah County, Oregon