As of the census of 2000, there were 3,878 people, 1,362 households, and 1,080 families residing in the township. The population density was 77.5 people per square mile (29.9/km). There were 1,447 housing units at an average density of 28.9/sq mi (11.2/km). The racial makeup of the township was 98.58% White, 0.15% African American, 0.05% Native American, 0.08% Asian, 0.05% from other races, and 1.08% from two or more races. Hispanic or Latino of any race were 0.52% of the population.