Boyne City, Michigan, United States [City]; population was 3,478 in 1990; housing units was 1,936 in 1990; location is 45°13'N 85°1'W; land area is 3.86 square miles (2,470 acres); water area is 1.32 square miles (847 acres); FIPS code is 9820 [SourceCBP]