15110 -- U.S. ZIP code Municipality (1990): DUQUESNE, Pennsylvania All ZIPs for this municipality (1990): 15110 Population (2000): 7332 Housing Units (2000): 3768 Land area (2000): 1.817081 sq. miles (4.706219 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.817081 sq. miles (4.706219 sq. km) Located within: Pennsylvania (PA) Location: 40.369969 N, 79.850957 W