Earlville, IL -- U.S. city in Illinois Population (2000): 1778 Housing Units (2000): 708 Land area (2000): 1.164088 sq. miles (3.014974 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.164088 sq. miles (3.014974 sq. km) FIPS code: 21540 Located within: Illinois (IL), FIPS 17 Location: 41.588552 N, 88.922356 W ZIP Codes (1990): 60518 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Earlville, IL Earlville