15311 -- U.S. ZIP code Municipality (1990): AMITY, Pennsylvania All ZIPs for this municipality (1990): 15311 Population (2000): 1368 Housing Units (2000): 535 Land area (2000): 23.572636 sq. miles (61.052844 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 23.572636 sq. miles (61.052844 sq. km) Located within: Pennsylvania (PA) Location: 40.042851 N, 80.188273 W