33143 -- U.S. ZIP code Municipality (1990): SOUTH MIAMI, Florida All ZIPs for this municipality (1990): 33143 Population (2000): 29788 Housing Units (2000): 12911 Land area (2000): 7.901729 sq. miles (20.465384 sq. km) Water area (2000): 0.058275 sq. miles (0.150931 sq. km) Total area (2000): 7.960004 sq. miles (20.616315 sq. km) Located within: Florida (FL) Location: 25.702929 N, 80.296423 W