Kiefer, OK -- U.S. town in Oklahoma Population (2000): 1026 Housing Units (2000): 410 Land area (2000): 1.827804 sq. miles (4.733990 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.827804 sq. miles (4.733990 sq. km) FIPS code: 39750 Located within: Oklahoma (OK), FIPS 40 Location: 35.943993 N, 96.059565 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Kiefer, OK Kiefer