Alcona County is a county of the U.S. state of Michigan. As of the 2010 census, the population was 10,942. Its county seat is Harrisville. Alphabetically it is the first county in Michigan; as its flag states, it is the “First of 83.

According to the U.S. Census Bureau, the county has a total area of 1,791 square miles (4,640 km2), of which 675 square miles (1,750 km2) is land and 1,116 square miles (2,890 km2) (62%) is water.[15]

The area is part of the Au Sable State Forest, specifically the Grayling FMU (Alcona, Crawford, Oscoda, and northern Iosco counties). The county is considered to be part of Northern Michigan.

Lakes

Lakes in the county include:[16]

National protected area