[3] Carson City was first platted in 1866 on land owned by R. M. Abbott, Delia Miner, and Hiram T. Sherman, and recorded in 1871.

With the corporate name Scott & LaDue, they built a sawmill in 1868 and a grist mill in 1870.

The post office from North Shade in Gratiot County was transferred to this location on August 3, 1868, with Hiram T. Sherman as the first postmaster.

[5] Carson City is in southeastern Montcalm County, bordered to the north, west, and south by Bloomer Township and to the east by North Shade Township in Gratiot County.

State highway M-57 runs through the city as Main Street, leading west 20 miles (32 km) to Greenville and east 37 miles (60 km) to Chesaning.

Stanton, the Montcalm county seat, is 20 miles (32 km) by road to the northwest.

[1] Fish Creek, a tributary of the Maple River and part of the Grand River watershed leading to Lake Michigan, flows southward along the western edge of the city.

35.7% of all households were made up of individuals, and 17.1% had someone living alone who was 65 years of age or older.

32.3% of all households were made up of individuals, and 15.7% had someone living alone who was 65 years of age or older.