As of the census of 2000, there were 4,012 people, 1,633 households, and 1,211 families residing in the township. The population density was 256.6 people per square mile (99.1/km2). There were 1,772 housing units at an average density of 113.4/sq mi (43.8/km2). The racial makeup of the township was 97.71% White, 0.25% African American, 0.05% Native American, 1.07% Asian, 0.17% from other races, and 0.75% from two or more races. Hispanic or Latino of any race were 0.52% of the population.