Mule Barn, OK -- U.S. town in Oklahoma Population (2000): 0 Housing Units (2000): 1 Land area (2000): 0.032792 sq. miles (0.084931 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.032792 sq. miles (0.084931 sq. km) FIPS code: 49860 Located within: Oklahoma (OK), FIPS 40 Location: 36.217307 N, 96.311705 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Mule Barn, OK Mule Barn