As of the census of 2000, there were 21,171 people, 7,619 households, and 5,889 families residing in the township. The population density was 1,451.7 people per square mile (560.6/km2). There were 7,831 housing units at an average density of 537.0/sq mi (207.4/km2). The racial makeup of the township was 93.27% White, 2.44% African American, 0.07% Native American, 2.20% Asian, 0.01% Pacific Islander, 1.14% from other races, and 0.87% from two or more races. Hispanic or Latino of any race were 3.97% of the population.