30064 -- U.S. ZIP code Municipality (1990): MARIETTA, Georgia All ZIPs for this municipality (1990): 30060 30062 30064 30066 30067 30068 Population (2000): 42244 Housing Units (2000): 15817 Land area (2000): 31.914514 sq. miles (82.658207 sq. km) Water area (2000): 0.195514 sq. miles (0.506379 sq. km) Total area (2000): 32.110028 sq. miles (83.164586 sq. km) Located within: Georgia (GA) Location: 33.946735 N, 84.602003 W