30223 -- U.S. ZIP code Municipality (1990): GRIFFIN, Georgia All ZIPs for this municipality (1990): 30223 Population (2000): 34765 Housing Units (2000): 13523 Land area (2000): 109.200930 sq. miles (282.829099 sq. km) Water area (2000): 1.149823 sq. miles (2.978028 sq. km) Total area (2000): 110.350753 sq. miles (285.807127 sq. km) Located within: Georgia (GA) Location: 33.268185 N, 84.273067 W