Vergennes, IL -- U.S. village in Illinois Population (2000): 491 Housing Units (2000): 127 Land area (2000): 0.361664 sq. miles (0.936705 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.361664 sq. miles (0.936705 sq. km) FIPS code: 77525 Located within: Illinois (IL), FIPS 17 Location: 37.903152 N, 89.340111 W ZIP Codes (1990): 62994 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Vergennes, IL Vergennes