Grant Park, IL -- U.S. village in Illinois Population (2000): 1358 Housing Units (2000): 517 Land area (2000): 0.618346 sq. miles (1.601509 sq. km) Water area (2000): 0.025856 sq. miles (0.066967 sq. km) Total area (2000): 0.644202 sq. miles (1.668476 sq. km) FIPS code: 30991 Located within: Illinois (IL), FIPS 17 Location: 41.240656 N, 87.645842 W ZIP Codes (1990): 60940 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Grant Park, IL Grant Park