Willits, CA -- U.S. city in California Population (2000): 5073 Housing Units (2000): 2013 Land area (2000): 2.797035 sq. miles (7.244286 sq. km) Water area (2000): 0.004869 sq. miles (0.012610 sq. km) Total area (2000): 2.801904 sq. miles (7.256896 sq. km) FIPS code: 85600 Located within: California (CA), FIPS 06 Location: 39.404357 N, 123.350947 W ZIP Codes (1990): 95490 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Willits, CA Willits