Sweetwater Township, Michigan

Sweetwater Township is a civil township of Lake County in the U.S. state of Michigan. The population was 258 at the 2020 census.

Communities

Branch is an unincorporated community on US 10 on the boundary between Mason County and Lake County at . The community shares its name with Branch Township in Mason County, but is also within Sweetwater Township in Lake County. It was founded about 1873 by Benjamin F. Barnett, who built a lumbermen's hotel. The Pere Marquette Railway later ran the hotel and made it a station. Barnett became the first postmaster of Branch, in Mason County, on February 1, 1876, named for the township, which in turn is named for the north branch of the Pere Marquette River. On October 1, 1962, the post office was transferred to Lake County. The Branch ZIP code 49402 serves most of Sweetwater township, as well as in Lake County, the western parts of Sauble Township and Lake Township and a small area of Webber Township. In Mason County, the ZIP code serves the eastern parts of Branch Township and Sheridan Township, most of Logan Township, and small areas of Meade Township, Eden Township, and Custer Township and a small area of Colfax Township in Oceana County.
Baldwin is to the southeast, and the Baldwin ZIP code 49304 also serves a small area in southeast Sweetwater Township.

According to the United States Census Bureau, the township has a total area of , of which is land and (0.20%) is water.

As of the census