Grinnell, KS -- U.S. city in Kansas Population (2000): 329 Housing Units (2000): 158 Land area (2000): 0.496839 sq. miles (1.286807 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.496839 sq. miles (1.286807 sq. km) FIPS code: 28900 Located within: Kansas (KS), FIPS 20 Location: 39.123999 N, 100.629852 W ZIP Codes (1990): 67738 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Grinnell, KS Grinnell