30040 -- U.S. ZIP code Population (2000): 42444 Housing Units (2000): 15382 Land area (2000): 111.633062 sq. miles (289.128292 sq. km) Water area (2000): 0.482645 sq. miles (1.250046 sq. km) Total area (2000): 112.115707 sq. miles (290.378338 sq. km) Located within: Georgia (GA) Location: 34.235408 N, 84.174416 W