31321 -- U.S. ZIP code Municipality (1990): PEMBROKE, Georgia All ZIPs for this municipality (1990): 31321 Population (2000): 5782 Housing Units (2000): 2251 Land area (2000): 141.195621 sq. miles (365.694964 sq. km) Water area (2000): 0.334968 sq. miles (0.867562 sq. km) Total area (2000): 141.530589 sq. miles (366.562526 sq. km) Located within: Georgia (GA) Location: 32.163245 N, 81.642118 W