As of the census of 2000, there were 4,100 people, 1,511 households, and 1,093 families residing in the township. The population density was 57.4 per square mile (22.2/km2). There were 2,150 housing units at an average density of 30.1 per square mile (11.6/km2). The racial makeup of the township was 96.46% White, 0.22% African American, 1.29% Native American, 0.02% Asian, 0.05% Pacific Islander, 0.27% from other races, and 1.68% from two or more races. Hispanic or Latino of any race were 1.49% of the population.