30742 -- U.S. ZIP code Municipality (1990): FORT OGLETHORPE, Georgia All ZIPs for this municipality (1990): 30742 Population (2000): 5835 Housing Units (2000): 2670 Land area (2000): 5.718390 sq. miles (14.810562 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 5.718390 sq. miles (14.810562 sq. km) Located within: Georgia (GA) Location: 34.948979 N, 85.252129 W