64641 -- U.S. ZIP code Municipality (1990): GALT, Missouri All ZIPs for this municipality (1990): 64641 Population (2000): 696 Housing Units (2000): 328 Land area (2000): 75.781606 sq. miles (196.273451 sq. km) Water area (2000): 0.044219 sq. miles (0.114526 sq. km) Total area (2000): 75.825825 sq. miles (196.387977 sq. km) Located within: Missouri (MO) Location: 40.165088 N, 93.394254 W