30446 -- U.S. ZIP code Municipality (1990): NEWINGTON, Georgia All ZIPs for this municipality (1990): 30446 Population (2000): 1315 Housing Units (2000): 616 Land area (2000): 53.588250 sq. miles (138.792925 sq. km) Water area (2000): 0.219940 sq. miles (0.569643 sq. km) Total area (2000): 53.808190 sq. miles (139.362568 sq. km) Located within: Georgia (GA) Location: 32.567281 N, 81.486277 W