30033 -- U.S. ZIP code Municipality (1990): DECATUR, Georgia All ZIPs for this municipality (1990): 30030 30032 30033 30034 30035 Population (2000): 27046 Housing Units (2000): 13633 Land area (2000): 8.791955 sq. miles (22.771058 sq. km) Water area (2000): 0.021695 sq. miles (0.056191 sq. km) Total area (2000): 8.813650 sq. miles (22.827249 sq. km) Located within: Georgia (GA) Location: 33.811354 N, 84.283353 W