Erwin Township, Michigan

According to the United States Census Bureau, the township has a total area of 48.2 square miles (125 km²), of which 47.2 square miles (122 km²) is land and 0.9 square miles (2.3 km²) (1.97%) is water.

As of the census[1] of 2000, there were 357 people, 146 households, and 104 families residing in the township. The population density was 7.6 inhabitants per square mile (2.9/km²). There were 216 housing units at an average density of 4.6 per square mile (1.8/km²). The racial makeup of the township was 99.16% White, 0.28% African American, and 0.56% from two or more races.

There were 146 households, out of which 27.4% had children under the age of 18 living with them, 62.3% were married couples living together, 8.2% had a female householder with no husband present, and 28.1% were non-families. 26.0% of all households were made up of individuals, and 6.8% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.95.

In the township the population was spread out, with 21.3% under the age of 18, 6.2% from 18 to 24, 28.6% from 25 to 44, 30.5% from 45 to 64, and 13.4% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 111.2 males. For every 100 females age 18 and over, there were 121.3 males.

The median income for a household in the township was $31,071, and the median income for a family was $40,313. Males had a median income of $30,250 versus $22,132 for females. The per capita income for the township was $14,014. About 6.6% of families and 7.4% of the population were below the poverty line, including 1.0% of those under age 18 and 11.3% of those age 65 or over.

CR 505 (Van Buskirk Road) begins at the Ironwood city limits and runs through the township to terminate at CTH-C on the Wisconsin state line in Oma, Wisconsin.