As of the 2000 United States Census there were 40,221 people, 16,570 households, and 11,068 families residing in the township. The population density was 1,844.3 people per square mile (712.0/km2). There were 17,163 housing units at an average density of 787.0 per square mile (303.8/km2). The racial makeup of the township was 87.10% White, 6.92% African American, 0.09% Native American, 3.80% Asian, 0.03% Pacific Islander, 0.64% from other races, and 1.41% from two or more races. Hispanic or Latino of any race were 2.24% of the population.