Griggsville, IL -- U.S. city in Illinois Population (2000): 1258 Housing Units (2000): 548 Land area (2000): 1.035378 sq. miles (2.681616 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.035378 sq. miles (2.681616 sq. km) FIPS code: 31771 Located within: Illinois (IL), FIPS 17 Location: 39.708403 N, 90.725797 W ZIP Codes (1990): 62340 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Griggsville, IL Griggsville