Tremont, IL -- U.S. village in Illinois Population (2000): 2029 Housing Units (2000): 835 Land area (2000): 0.953123 sq. miles (2.468576 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.953123 sq. miles (2.468576 sq. km) FIPS code: 75965 Located within: Illinois (IL), FIPS 17 Location: 40.525687 N, 89.490443 W ZIP Codes (1990): 61568 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Tremont, IL Tremont