Coleman is a city in Midland County of the U.S. state of Michigan. The population was 1,262 at the 2020 census. Coleman began with the b…Coleman is a city in Midland County of the U.S. state of Michigan. The population was 1,262 at the 2020 census. Coleman began with the building of a sawmill in 1870. The following year a station of the Pere Marquette Railroad was opened. It was incorporated as a village in 1887 and as a city in 1905.