Lebanon, IL -- U.S. city in Illinois Population (2000): 3523 Housing Units (2000): 1389 Land area (2000): 2.146312 sq. miles (5.558922 sq. km) Water area (2000): 0.002244 sq. miles (0.005812 sq. km) Total area (2000): 2.148556 sq. miles (5.564734 sq. km) FIPS code: 42496 Located within: Illinois (IL), FIPS 17 Location: 38.603398 N, 89.811271 W ZIP Codes (1990): 62254 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Lebanon, IL Lebanon