 The population density was 33 people per square mile (12.7/km²).There were 637 housing units at an average density of 16.6/sq mi (6.5/km²).The racial makeup of the township was 97.6% White, 0.3% African American, 0.2% Native American, 0.9% Asian, 0.7% from other races, and 0.2% from two or more races.