30543 -- U.S. ZIP code Municipality (1990): GILLSVILLE, Georgia All ZIPs for this municipality (1990): 30543 Population (2000): 3446 Housing Units (2000): 1300 Land area (2000): 40.211386 sq. miles (104.147007 sq. km) Water area (2000): 0.018214 sq. miles (0.047175 sq. km) Total area (2000): 40.229600 sq. miles (104.194182 sq. km) Located within: Georgia (GA) Location: 34.299459 N, 83.652263 W