Portia, AR -- U.S. town in Arkansas Population (2000): 483 Housing Units (2000): 225 Land area (2000): 1.292224 sq. miles (3.346844 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.292224 sq. miles (3.346844 sq. km) FIPS code: 56720 Located within: Arkansas (AR), FIPS 05 Location: 36.085273 N, 91.068430 W ZIP Codes (1990): 72457 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Portia, AR Portia