Tensas -- U.S. Parish in Louisiana Population (2000): 6618 Housing Units (2000): 3359 Land area (2000): 602.482937 sq. miles (1560.423577 sq. km) Water area (2000): 38.717881 sq. miles (100.278846 sq. km) Total area (2000): 641.200818 sq. miles (1660.702423 sq. km) Located within: Louisiana (LA), FIPS 22 Location: 31.967396 N, 91.314839 W Headwords: Tensas Tensas, LA Tensas Parish Tensas Parish, LA