Carson City is a city in Montcalm County of the U.S. state of Michigan. The population was 1,093 at the 2010 census.Carson City was first platted in 1866 on land owned by R. M. Abbott, Delia Miner, and Hiram T. Sherman and recorded in 1871. The first lot was sold to Thomas Scott and two nephews, John and Thomas LaDue in 1867. With the corporate name Scott & LaDue, they built a sawmill in 1868 and a grist mill in 1870.