Calhoun -- U.S. County in Mississippi Population (2000): 15069 Housing Units (2000): 6902 Land area (2000): 586.537789 sq. miles (1519.125834 sq. km) Water area (2000): 1.431990 sq. miles (3.708838 sq. km) Total area (2000): 587.969779 sq. miles (1522.834672 sq. km) Located within: Mississippi (MS), FIPS 28 Location: 33.913502 N, 89.324200 W Headwords: Calhoun Calhoun, MS Calhoun County Calhoun County, MS