Alexander -- U.S. County in Illinois Population (2000): 9590 Housing Units (2000): 4591 Land area (2000): 236.381740 sq. miles (612.225870 sq. km) Water area (2000): 16.156786 sq. miles (41.845883 sq. km) Total area (2000): 252.538526 sq. miles (654.071753 sq. km) Located within: Illinois (IL), FIPS 17 Location: 37.146816 N, 89.289480 W Headwords: Alexander Alexander, IL Alexander County Alexander County, IL