The community of Spring Arbor lies in the township.
According to the United States Census Bureau, the township has a total area of 35.8 square miles (93 km2), of which 35.4 square miles (92 km2) is land and 0.4 square miles (1.0 km2) (1.09%) is water.
The township encompasses all thirty-six sections of the T3S R2W survey township.
As of the census of 2000, there were 7,577 people, 2,570 households, and 1,930 families residing in the township. The population density was 214.1 per square mile (82.7/km²). There were 2,694 housing units at an average density of 76.1 per square mile (29.4/km²). The racial makeup of the township was 97.04% White, 0.81% African American, 0.40% Native American, 0.50% Asian, 0.13% Pacific Islander, 0.36% from other races, and 0.77% from two or more races. Hispanic or Latino of any race were 1.72% of the population.
There were 2,570 households out of which 36.7% had children under the age of 18 living with them, 61.7% were married couples living together, 9.7% had a female householder with no husband present, and 24.9% were non-families. 21.1% of all households were made up of individuals and 9.7% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.05.