St. Johns is the largest city and county seat of Clinton County in the U.S. state of Michigan. The population was 7,698 at the 2020 census. St. Johns is located in the north of Clinton County, surrounded by Bingham Township (although the two are administered independently). St. Johns is about 18 miles (29 km) north of Lansing, Michigan's capital city, and is part of the Lansing–East Lansing metropolitan area. St. Johns has been nicknamed the "Mint Capital of the World".
