15236 -- U.S. ZIP code Municipality (1990): CASTE VILLAGE, Pennsylvania All ZIPs for this municipality (1990): 15236 Population (2000): 30630 Housing Units (2000): 13425 Land area (2000): 9.954857 sq. miles (25.782960 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 9.954857 sq. miles (25.782960 sq. km) Located within: Pennsylvania (PA) Location: 40.342869 N, 79.979298 W