Gridley, IL -- U.S. village in Illinois Population (2000): 1411 Housing Units (2000): 569 Land area (2000): 1.160780 sq. miles (3.006406 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.160780 sq. miles (3.006406 sq. km) FIPS code: 31732 Located within: Illinois (IL), FIPS 17 Location: 40.742748 N, 88.880428 W ZIP Codes (1990): 61744 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Gridley, IL Gridley