Cedar Hills is a census-designated place and neighborhood in Washington County, Oregon, United States south of U.S. Route 26 and west of Oregon Route 217 and within the Portland metropolitan area. Constructed starting in 1946, Cedar Hills was the largest single housing tract development in the western United States at the time of its completion in 1961.
According to the United States Census Bureau, the neighborhood has a total area of 2.3 square miles (6.0 km), of which 2.3 square miles (6.0 km) is land and 0.43% is water.
As of the census of 2000, there were 8,949 people, 3,749 households, and 2,361 families residing in the neighborhood. The population density was 3,880.9 people per square mile (1,495.8/km²). There were 3,926 housing units at an average density of 1,702.6 per square mile (656.2/km²). The racial makeup of the CDP was 83.28% White, 1.32% African American, 0.57% Native American, 4.78% Asian, 0.35% Pacific Islander, 6.05% from other races, and 3.65% from two or more races. Hispanic or Latino of any race were 11.21% of the population.
There were 3,749 households out of which 28.9% had children under the age of 18 living with them, 49.4% were married couples living together, 9.8% had a female householder with no husband present, and 37.0% were non-families. 29.0% of all households were made up of individuals and 9.0% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.94.
In the neighborhood the population was spread out with 23.0% under the age of 18, 7.7% from 18 to 24, 33.4% from 25 to 44, 23.4% from 45 to 64, and 12.5% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 98.4 males. For every 100 females age 18 and over, there were 96.8 males.
The median income for a household in the neighborhood was $48,200, and the median income for a family was $56,401. Males had a median income of $42,293 versus $29,922 for females. The per capita income for the CDP was $26,812. About 3.9% of families and 6.5% of the population were below the poverty line, including 7.8% of those under age 18 and 3.0% of those age 65 or over.