Casco Township, St. Clair County, Michigan

Casco Township is a civil township of St. Clair County in the U.S. state of Michigan. As of the 2020 Census, the township population was 3,990.

History

Casco Township was established in 1849.

There are four unincorporated communities within the Township:

Adair is located in the northeast part of the township at . The settlement of this location began circa 1840. It was a station on the Michigan Central Railway and was named by an English contractor who built the branch of the railway here.
Casco is an unincorporated community in the south central part of the township at . The first white settlers began arriving in the area before 1840. The township was organized in 1849 and is believed to be named after Casco, Maine, by Captain John Clarke, a transplanted native of that state. A post office operated there from 1854 until 1907.
Muttonville is located on the western boundary of the township with adjacent Richmond in Macomb County at . It was so named because it was the principal slaughterhouse for what was predominantly a sheep raising area.
Peters is an unincorporated community in the southeast part of the township at . It was originally called "Petersburg" after an early settler, John Peters. Because there was another post office named Petersburg in Michigan, the post office here was named simply "Peters" and operated from 1891 until 1905.

According to the United States Census Bureau, the township has a total area of , of which is land and (0.08%) is water.

As of the census