As of the census of 2000, there were 39,657 people, 17,096 households, and 10,685 families residing in the township. The population density was 1,608.9 per square mile (621.2/km2). There were 17,859 housing units at an average density of 724.5 per square mile (279.7/km2). The racial makeup of the township was 88.77% White, 5.28% African American, 0.27% Native American, 2.68% Asian, 0.01% Pacific Islander, 1.47% from other races, and 1.52% from two or more races. Hispanic or Latino of any race were 4.17% of the population.