Tonkawa, OK -- U.S. city in Oklahoma Population (2000): 3299 Housing Units (2000): 1417 Land area (2000): 5.579458 sq. miles (14.450729 sq. km) Water area (2000): 0.021821 sq. miles (0.056515 sq. km) Total area (2000): 5.601279 sq. miles (14.507244 sq. km) FIPS code: 74150 Located within: Oklahoma (OK), FIPS 40 Location: 36.680362 N, 97.309219 W ZIP Codes (1990): 74653 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Tonkawa, OK Tonkawa