As of the census of 2000, there were 4,145 people, 1,362 households, and 1,010 families residing in the township. The population density was 45.1 people per square mile (17.4/km2). There were 1,750 housing units at an average density of 19.0/sq mi (7.4/km2). The racial makeup of the township was 99.13% White, 0.10% African American, 0.02% Native American, 0.12% Asian, 0.02% Pacific Islander, 0.19% from other races, and 0.41% from two or more races. Hispanic or Latino of any race were 0.41% of the population.