As of the census of 2000, there were 4,102 people, 1,617 households, and 1,151 families residing in the township. The population density was 107.8 per square mile (41.6/km2). There were 1,718 housing units at an average density of 45.2 per square mile (17.4/km2). The racial makeup of the township was 98.15% White, 0.37% African American, 0.46% Native American, 0.17% Asian, 0.27% from other races, and 0.59% from two or more races. Hispanic or Latino of any race were 1.15% of the population.