Arenac -- U.S. County in Michigan Population (2000): 17269 Housing Units (2000): 9563 Land area (2000): 366.842485 sq. miles (950.117635 sq. km) Water area (2000): 313.969422 sq. miles (813.177035 sq. km) Total area (2000): 680.811907 sq. miles (1763.294670 sq. km) Located within: Michigan (MI), FIPS 26 Location: 44.061283 N, 83.866873 W Headwords: Arenac Arenac, MI Arenac County Arenac County, MI