60018 -- U.S. ZIP code Municipality (1990): ROSEMONT, Illinois All ZIPs for this municipality (1990): 60018 Population (2000): 29950 Housing Units (2000): 10790 Land area (2000): 13.685446 sq. miles (35.445142 sq. km) Water area (2000): 0.069715 sq. miles (0.180560 sq. km) Total area (2000): 13.755161 sq. miles (35.625702 sq. km) Located within: Illinois (IL) Location: 42.008429 N, 87.892344 W