 The population density was 41.0 per square mile (15.8/km²).There were 540 housing units at an average density of 15.0 per square mile (5.8/km²).The racial makeup of the township was 97.89% White, 0.61% African American, 0.07% Native American, 0.54% Asian, 0.14% from other races, and 0.75% from two or more races.