30828 -- U.S. ZIP code Municipality (1990): WARRENTON, Georgia All ZIPs for this municipality (1990): 30828 Population (2000): 4460 Housing Units (2000): 1901 Land area (2000): 132.416794 sq. miles (342.957908 sq. km) Water area (2000): 0.714915 sq. miles (1.851622 sq. km) Total area (2000): 133.131709 sq. miles (344.809530 sq. km) Located within: Georgia (GA) Location: 33.399555 N, 82.656552 W