As of the census of 2000, there were 11,559 people, 4,577 households, and 3,469 families residing in the township. The population density was 297.2 people per square mile (114.8/km). There were 4,840 housing units at an average density of 124.4/sq mi (48.1/km). The racial makeup of the township was 97.08% White, 1.01% African American, 0.15% Native American, 0.90% Asian, 0.03% Pacific Islander, 0.34% from other races, and 0.49% from two or more races. Hispanic or Latino of any race were 0.80% of the population.