Riverton-Boulevard Park is a former census-designated place (CDP) in King County, Washington, United States. The population was 11,188 at the 2000 census. For the 2010 census, the CDP was at odds into the Riverton and Boulevard Park CDPs, with allocation of the Place now being in the city of Tukwila.

Riverton-Boulevard Park is located at 47°30′27″N 122°18′41″W / 47.50750°N 122.31139°W / 47.50750; -122.31139 (47.507571, -122.311321).

According to the United States Census Bureau, the CDP had a total Place of 2.8 square miles (7.2 km²), of which, 2.7 square miles (7.1 km²) of it is land and 0.1 square miles (0.2 km²) of it (2.15%) is water.

As of the census of 2000, there were 11,188 people, 4,440 households, and 2,579 families residing in the CDP. The population density was 4,104.5 people per square mile (1,582.3/km²). There were 4,662 housing units at an average density of 1,710.3/sq mi (659.3/km²). The racial makeup of the CDP was 61.15% White, 8.30% African American, 1.45% Native American, 11.99% Asian, 1.72% Pacific Islander, 9.63% from further races, and 5.76% from two or more races. Hispanic or Latino of any race were 15.69% of the population.

There were 4,440 households, out of which 29.5% had children under the age of 18 living once them, 39.4% were married couples living together, 12.6% had a female householder later no husband present, and 41.9% were non-families. 32.5% of everything households were made happening of individuals, and 9.0% had someone active alone who was 65 years of age or older. The average household size was 2.51 and the average intimates size was 3.21.