Heyworth, IL -- U.S. village in Illinois Population (2000): 2431 Housing Units (2000): 956 Land area (2000): 1.544834 sq. miles (4.001102 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.544834 sq. miles (4.001102 sq. km) FIPS code: 34449 Located within: Illinois (IL), FIPS 17 Location: 40.314718 N, 88.977896 W ZIP Codes (1990): 61745 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Heyworth, IL Heyworth