Shiawassee Township, Michigan  Shiawassee Township is a civil township of Shiawassee County in the U.S. state of Michigan. The population was 2,840 at the 2010 census. According to the United States Census Bureau, the township has a total area of , of which is land and (1.25%) is water. At the 2000 census, there were 2,907 people, 1,008 households and 815 families residing in the township. The population density was 79.2 per square mile (30.6/km²). There were 1,054 housing units at an average density of 28.7 per square mile (11.1/km²). The racial makeup of the township was 97.25% White, 0.65% Native American, 0.10% Asian, 0.38% from other races, and 1.62% from two or more races. Hispanic or Latino of any race were 1.03% of the population. There were 1,008 households of which 37.6% had children under the age of 18 living with them, 68.6% were married couples living together, 8.0% had a female householder with no husband present, and 19.1% were non-families. 15.6% of all households were made up of individuals and 6.2% had someone living alone who was 65 years of age or older. The average household size was 2.88 and the average family size was 3.20.  27.8% of the population were under the age of 18, 8.0% from 18 to 24, 28.8% from 25 to 44, 26.7% from 45 to 64, and 8.7% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 100.8 males. For every 100 females age 18 and over, there were 101.2 males. The median household income was $48,220 and the median family income was $50,766. Males had a median income of $44,514 compared with $23,977 for females. The per capita income for the township was $19,713. About 4.2% of families and 6.1% of the population were below the poverty line, including 7.0% of those under age 18 and 3.0% of those age 65 or over.