31021 -- U.S. ZIP code Municipality (1990): EAST DUBLIN, Georgia All ZIPs for this municipality (1990): 31021 Population (2000): 27457 Housing Units (2000): 11864 Land area (2000): 241.744136 sq. miles (626.114411 sq. km) Water area (2000): 0.973499 sq. miles (2.521350 sq. km) Total area (2000): 242.717635 sq. miles (628.635761 sq. km) Located within: Georgia (GA) Location: 32.526359 N, 82.933756 W