15061 -- U.S. ZIP code Municipality (1990): MONACA, Pennsylvania All ZIPs for this municipality (1990): 15061 Population (2000): 13828 Housing Units (2000): 5840 Land area (2000): 18.613605 sq. miles (48.209013 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 18.613605 sq. miles (48.209013 sq. km) Located within: Pennsylvania (PA) Location: 40.677132 N, 80.288817 W