As of the census of 2000, there were 4,526 people, 1,639 households, and 1,276 families residing in the township. The population density was 100.1 people per square mile (38.7/km). There were 1,720 housing units at an average density of 38.1/sq mi (14.7/km). The racial makeup of the township was 98.21% White, 0.31% African American, 0.13% Native American, 0.20% Asian, 0.15% from other races, and 0.99% from two or more races. Hispanic or Latino of any race were 0.75% of the population.