Erwin Township is a civil township of Gogebic County in the U.S. state of Michigan. The population was 267 in 2020.
The township is just south of Ironwood. The Montreal River is the western boundary, with Wisconsin on the other side and to the south. Bessemer Township is on the east and north.
Geography
According to the United States Census Bureau, the township has a total area of , of which is land and (1.97%) is water.
Demographics
As of the census