15445 -- U.S. ZIP code Municipality (1990): HOPWOOD, Pennsylvania All ZIPs for this municipality (1990): 15445 Population (2000): 3206 Housing Units (2000): 1436 Land area (2000): 22.235556 sq. miles (57.589822 sq. km) Water area (2000): 0.039312 sq. miles (0.101818 sq. km) Total area (2000): 22.274868 sq. miles (57.691640 sq. km) Located within: Pennsylvania (PA) Location: 39.876251 N, 79.692964 W