Sherman Township is a civil township of St. Joseph County in the U.S. state of Michigan, located just north of Sturgis. The population was 3,444 at the 2020 census. According to the United States Census Bureau, the township has a total area of 35.0 square miles, of which 33.1 square miles is land and 1.9 square miles is water. Major roads in the township inc…Sherman Township is a civil township of St. Joseph County in the U.S. state of Michigan, located just north of Sturgis. The population was 3,444 at the 2020 census. According to the United States Census Bureau, the township has a total area of 35.0 square miles, of which 33.1 square miles is land and 1.9 square miles is water. Major roads in the township include M-66, Banker Street Rd., Featherstone Rd., Shimmel Rd., and Balk Rd.