Waldo, KS -- U.S. city in Kansas Population (2000): 48 Housing Units (2000): 32 Land area (2000): 0.381064 sq. miles (0.986950 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.381064 sq. miles (0.986950 sq. km) FIPS code: 74575 Located within: Kansas (KS), FIPS 20 Location: 39.120162 N, 98.797863 W ZIP Codes (1990): 67673 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Waldo, KS Waldo