30549 -- U.S. ZIP code Municipality (1990): JEFFERSON, Georgia All ZIPs for this municipality (1990): 30549 Population (2000): 12804 Housing Units (2000): 4802 Land area (2000): 106.425059 sq. miles (275.639627 sq. km) Water area (2000): 0.113130 sq. miles (0.293006 sq. km) Total area (2000): 106.538189 sq. miles (275.932633 sq. km) Located within: Georgia (GA) Location: 34.112581 N, 83.582514 W