Knoxville, AR -- U.S. city in Arkansas Population (2000): 511 Housing Units (2000): 210 Land area (2000): 2.218538 sq. miles (5.745987 sq. km) Water area (2000): 0.001124 sq. miles (0.002911 sq. km) Total area (2000): 2.219662 sq. miles (5.748898 sq. km) FIPS code: 37300 Located within: Arkansas (AR), FIPS 05 Location: 35.382929 N, 93.365747 W ZIP Codes (1990): 72845 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Knoxville, AR Knoxville