30144 -- U.S. ZIP code Municipality (1990): KENNESAW, Georgia All ZIPs for this municipality (1990): 30144 Population (2000): 38874 Housing Units (2000): 15502 Land area (2000): 22.715355 sq. miles (58.832498 sq. km) Water area (2000): 0.196346 sq. miles (0.508535 sq. km) Total area (2000): 22.911701 sq. miles (59.341033 sq. km) Located within: Georgia (GA) Location: 34.038949 N, 84.597063 W