Boyne City /ˈbɔɪn ˈsɪti/ is a city in Charlevoix County in the U.S. state of Michigan. The population was 3,735 at the 2010 census.Boyne City is at the southeast end of the east arm of Lake Charlevoix, where the Boyne River enters the lake. It is at the corners of four townships, though it is politically independent: Evangeline Township is to the northwest, Melrose Township to the northeast, Boyne Valley Township to the southeast, and Wilson Township to the southwest.M-75 connects with US 131 twice, at Walloon Lake about 6 miles to the northeast and at Boyne Falls about 6 miles to the southeast. County roads run west out of the city along the north and south shores of Lake Charlevoix.