Greenfield, IL -- U.S. city in Illinois Population (2000): 1179 Housing Units (2000): 531 Land area (2000): 1.715639 sq. miles (4.443485 sq. km) Water area (2000): 0.063409 sq. miles (0.164229 sq. km) Total area (2000): 1.779048 sq. miles (4.607714 sq. km) FIPS code: 31368 Located within: Illinois (IL), FIPS 17 Location: 39.342969 N, 90.209798 W ZIP Codes (1990): 62044 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Greenfield, IL Greenfield