63445 -- U.S. ZIP code Municipality (1990): KAHOKA, Missouri All ZIPs for this municipality (1990): 63445 Population (2000): 4067 Housing Units (2000): 1748 Land area (2000): 161.059309 sq. miles (417.141677 sq. km) Water area (2000): 0.209103 sq. miles (0.541575 sq. km) Total area (2000): 161.268412 sq. miles (417.683252 sq. km) Located within: Missouri (MO) Location: 40.415683 N, 91.718175 W