As of the census of 2000, there were 20,535 people, 8,892 households, and 5,655 families residing in the CDP. The population density was 4,480.1 people per square mile (1,731.1/km). There were 9,128 housing units at an average density of 1,991.5/sq mi (769.5/km). The racial makeup of the CDP was 97.62% White, 0.06% Black, 0.01% American Indian, 1.30% Asian, 0.03% Pacific Islander, 0.28% from other races, and 1.13% from two or more races. 1.01% of the population were Hispanic or Latino of any race.