As of the census of 2000, there were 4,219 people, 1,628 households, and 1,253 families residing in the township. The population density was 134.0 per square mile (51.7/km). There were 2,182 housing units at an average density of 69.3 per square mile (26.8/km). The racial makeup of the township was 97.35% White, 0.26% African American, 0.36% Native American, 0.19% Asian, 0.02% Pacific Islander, 0.45% from other races, and 1.37% from two or more races. Hispanic or Latino of any race were 1.56% of the population.