Harrisburg, AR -- U.S. city in Arkansas Population (2000): 2192 Housing Units (2000): 928 Land area (2000): 2.086880 sq. miles (5.404995 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 2.086880 sq. miles (5.404995 sq. km) FIPS code: 30400 Located within: Arkansas (AR), FIPS 05 Location: 35.564123 N, 90.722152 W ZIP Codes (1990): 72432 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Harrisburg, AR Harrisburg