30528 -- U.S. ZIP code Municipality (1990): CLEVELAND, Georgia All ZIPs for this municipality (1990): 30528 Population (2000): 16870 Housing Units (2000): 7504 Land area (2000): 174.165842 sq. miles (451.087441 sq. km) Water area (2000): 0.388780 sq. miles (1.006935 sq. km) Total area (2000): 174.554622 sq. miles (452.094376 sq. km) Located within: Georgia (GA) Location: 34.595859 N, 83.761942 W