30153 -- U.S. ZIP code Municipality (1990): ROCKMART, Georgia All ZIPs for this municipality (1990): 30153 Population (2000): 14571 Housing Units (2000): 5889 Land area (2000): 140.681347 sq. miles (364.363001 sq. km) Water area (2000): 0.538454 sq. miles (1.394589 sq. km) Total area (2000): 141.219801 sq. miles (365.757590 sq. km) Located within: Georgia (GA) Location: 33.987497 N, 85.055082 W