60070 -- U.S. ZIP code Municipality (1990): PROSPECT HEIGHTS, Illinois All ZIPs for this municipality (1990): 60070 Population (2000): 16126 Housing Units (2000): 6256 Land area (2000): 3.449872 sq. miles (8.935127 sq. km) Water area (2000): 0.023529 sq. miles (0.060941 sq. km) Total area (2000): 3.473401 sq. miles (8.996068 sq. km) Located within: Illinois (IL) Location: 42.105576 N, 87.928168 W