31812 -- U.S. ZIP code Municipality (1990): JUNCTION CITY, Georgia All ZIPs for this municipality (1990): 31812 Population (2000): 574 Housing Units (2000): 294 Land area (2000): 75.264745 sq. miles (194.934787 sq. km) Water area (2000): 0.348951 sq. miles (0.903779 sq. km) Total area (2000): 75.613696 sq. miles (195.838566 sq. km) Located within: Georgia (GA) Location: 32.614374 N, 84.445133 W