34950 -- U.S. ZIP code Municipality (1990): FORT PIERCE, Florida All ZIPs for this municipality (1990): 34945 34946 34947 34949 34950 34951 34981 34982 Population (2000): 17739 Housing Units (2000): 7231 Land area (2000): 4.776198 sq. miles (12.370296 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.776198 sq. miles (12.370296 sq. km) Located within: Florida (FL) Location: 27.448016 N, 80.336446 W