Ogemaw -- U.S. County in Michigan Population (2000): 21645 Housing Units (2000): 15404 Land area (2000): 564.303854 sq. miles (1461.540211 sq. km) Water area (2000): 10.327838 sq. miles (26.748977 sq. km) Total area (2000): 574.631692 sq. miles (1488.289188 sq. km) Located within: Michigan (MI), FIPS 26 Location: 44.333667 N, 84.130573 W Headwords: Ogemaw Ogemaw, MI Ogemaw County Ogemaw County, MI