Caldwell, KS -- U.S. city in Kansas Population (2000): 1284 Housing Units (2000): 668 Land area (2000): 1.098110 sq. miles (2.844091 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.098110 sq. miles (2.844091 sq. km) FIPS code: 09900 Located within: Kansas (KS), FIPS 20 Location: 37.034077 N, 97.609022 W ZIP Codes (1990): 67022 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Caldwell, KS Caldwell