64022 -- U.S. ZIP code Municipality (1990): DOVER, Missouri All ZIPs for this municipality (1990): 64022 Population (2000): 145 Housing Units (2000): 64 Land area (2000): 7.730251 sq. miles (20.021257 sq. km) Water area (2000): 0.095123 sq. miles (0.246367 sq. km) Total area (2000): 7.825374 sq. miles (20.267624 sq. km) Located within: Missouri (MO) Location: 39.192552 N, 93.686610 W