Jonesboro, IL -- U.S. city in Illinois Population (2000): 1853 Housing Units (2000): 792 Land area (2000): 1.914213 sq. miles (4.957788 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.914213 sq. miles (4.957788 sq. km) FIPS code: 38635 Located within: Illinois (IL), FIPS 17 Location: 37.451126 N, 89.268566 W ZIP Codes (1990): 62952 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Jonesboro, IL Jonesboro