 There were 647 housing units at an average density of 15.1/sq mi (5.8/km²).The racial makeup of the township was 99.70% White, and 0.30% from two or more races.There were 156 households out of which 19.9% had children under the age of 18 living with them, 59.6% were married couples living together, 2.6% had a female householder with no husband present, and 34.6% were non-families.