Fallis, OK -- U.S. town in Oklahoma Population (2000): 28 Housing Units (2000): 17 Land area (2000): 0.344871 sq. miles (0.893211 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.344871 sq. miles (0.893211 sq. km) FIPS code: 25250 Located within: Oklahoma (OK), FIPS 40 Location: 35.749471 N, 97.121665 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Fallis, OK Fallis