Forrest, IL -- U.S. village in Illinois Population (2000): 1225 Housing Units (2000): 504 Land area (2000): 0.626138 sq. miles (1.621689 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.626138 sq. miles (1.621689 sq. km) FIPS code: 27026 Located within: Illinois (IL), FIPS 17 Location: 40.750018 N, 88.409992 W ZIP Codes (1990): 61741 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Forrest, IL Forrest