31544 -- U.S. ZIP code Municipality (1990): JACKSONVILLE, Georgia All ZIPs for this municipality (1990): 31544 Population (2000): 763 Housing Units (2000): 417 Land area (2000): 94.868812 sq. miles (245.709085 sq. km) Water area (2000): 0.344892 sq. miles (0.893266 sq. km) Total area (2000): 95.213704 sq. miles (246.602351 sq. km) Located within: Georgia (GA) Location: 31.840974 N, 82.961379 W