Mackinac -- U.S. County in Michigan Population (2000): 11943 Housing Units (2000): 9413 Land area (2000): 1021.582582 sq. miles (2645.886628 sq. km) Water area (2000): 1078.964958 sq. miles (2794.506294 sq. km) Total area (2000): 2100.547540 sq. miles (5440.392922 sq. km) Located within: Michigan (MI), FIPS 26 Location: 46.041011 N, 84.988273 W Headwords: Mackinac Mackinac, MI Mackinac County Mackinac County, MI