Overisel Township, Michigan


Overisel Township is a civil township of Allegan County in the U.S. state of Michigan. The population was 2,911 at the 2010 census.
Overisel was named after the Dutch province of Overijssel. Overisel is the birthplace of mathematician George David Birkhoff, best known for what is now called the ergodic theorem.

Communities

According to the United States Census Bureau, the township has a total area of, of which is land and, or 0.22%, is water.

Demographics

As of the census of 2000, there were 2,594 people, 869 households, and 730 families residing in the township. The population density was 72.4 per square mile. There were 897 housing units at an average density of 25.0 per square mile. The racial makeup of the township was 96.92% White, 0.04% African American, 0.04% Native American, 0.50% Asian, 2.20% from other races, and 0.31% from two or more races. Hispanic or Latino of any race were 3.39% of the population.
There were 869 households out of which 42.7% had children under the age of 18 living with them, 77.7% were married couples living together, 3.5% had a female householder with no husband present, and 15.9% were non-families. 13.8% of all households were made up of individuals and 6.3% had someone living alone who was 65 years of age or older. The average household size was 2.98 and the average family size was 3.30.
In the township the population was spread out with 30.9% under the age of 18, 7.5% from 18 to 24, 30.8% from 25 to 44, 20.1% from 45 to 64, and 10.8% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 103.3 males. For every 100 females age 18 and over, there were 104.0 males.
The median income for a household in the township was $52,857, and the median income for a family was $56,964. Males had a median income of $39,594 versus $26,982 for females. The per capita income for the township was $18,831. About 1.5% of families and 2.3% of the population were below the poverty line, including none of those under age 18 and 15.4% of those age 65 or over.