31815 -- U.S. ZIP code Municipality (1990): LUMPKIN, Georgia All ZIPs for this municipality (1990): 31815 Population (2000): 2309 Housing Units (2000): 1062 Land area (2000): 227.441887 sq. miles (589.071758 sq. km) Water area (2000): 0.992685 sq. miles (2.571042 sq. km) Total area (2000): 228.434572 sq. miles (591.642800 sq. km) Located within: Georgia (GA) Location: 32.030297 N, 84.812182 W