Caldwell, AR -- U.S. town in Arkansas Population (2000): 465 Housing Units (2000): 190 Land area (2000): 3.006237 sq. miles (7.786118 sq. km) Water area (2000): 0.016896 sq. miles (0.043761 sq. km) Total area (2000): 3.023133 sq. miles (7.829879 sq. km) FIPS code: 10450 Located within: Arkansas (AR), FIPS 05 Location: 35.074569 N, 90.809510 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Caldwell, AR Caldwell