30220 -- U.S. ZIP code Municipality (1990): GRANTVILLE, Georgia All ZIPs for this municipality (1990): 30220 Population (2000): 3116 Housing Units (2000): 1253 Land area (2000): 47.780081 sq. miles (123.749837 sq. km) Water area (2000): 0.052002 sq. miles (0.134684 sq. km) Total area (2000): 47.832083 sq. miles (123.884521 sq. km) Located within: Georgia (GA) Location: 33.230734 N, 84.825435 W