15238 -- U.S. ZIP code Municipality (1990): BLAWNOX, Pennsylvania All ZIPs for this municipality (1990): 15238 Population (2000): 13571 Housing Units (2000): 5569 Land area (2000): 17.622588 sq. miles (45.642292 sq. km) Water area (2000): 0.009172 sq. miles (0.023756 sq. km) Total area (2000): 17.631760 sq. miles (45.666048 sq. km) Located within: Pennsylvania (PA) Location: 40.518701 N, 79.867443 W