30145 -- U.S. ZIP code Municipality (1990): KINGSTON, Georgia All ZIPs for this municipality (1990): 30145 Population (2000): 6007 Housing Units (2000): 2234 Land area (2000): 68.536993 sq. miles (177.509990 sq. km) Water area (2000): 0.008358 sq. miles (0.021648 sq. km) Total area (2000): 68.545351 sq. miles (177.531638 sq. km) Located within: Georgia (GA) Location: 34.237986 N, 84.978013 W