30905 -- U.S. ZIP code Municipality (1990): FORT GORDON, Georgia All ZIPs for this municipality (1990): 30905 Population (2000): 7751 Housing Units (2000): 888 Land area (2000): 37.094014 sq. miles (96.073050 sq. km) Water area (2000): 0.131669 sq. miles (0.341021 sq. km) Total area (2000): 37.225683 sq. miles (96.414071 sq. km) Located within: Georgia (GA) Location: 33.417282 N, 82.144352 W