Sunnyside is a former census-designated place in Clackamas County in the U.S. state of Oregon. Located in the Portland metropolitan area along Interstate 205, the population was 6,791 at the 2000 census. The area was not recorded as a distinct place for the 2010 census.
According to the United States Census Bureau, the CDP had a total area of 2.6 square miles (6.7 km²), all land.
As of the census of 2000, there were 6,791 people, 2,751 households, and 1,735 families residing in the CDP. The population density was 2,620.9 people per square mile (1,012.4/km²). There were 2,900 housing units at an average density of 1,119.2/sq mi (432.3/km²). The racial makeup of the CDP was 84.91% White, 1.38% African American, 0.69% Native American, 7.05% Asian, 0.31% Pacific Islander, 2.12% from other races, and 3.53% from two or more races. Hispanic or Latino of any race were 4.56% of the population.
There were 2,751 households out of which 30.9% had children under the age of 18 living with them, 49.1% were married couples living together, 10.4% had a female householder with no husband present, and 36.9% were non-families. 25.2% of all households were made up of individuals and 2.8% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.01.