Tobin, CA -- U.S. Census Designated Place in California Population (2000): 11 Housing Units (2000): 21 Land area (2000): 5.016641 sq. miles (12.993040 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 5.016641 sq. miles (12.993040 sq. km) FIPS code: 78792 Located within: California (CA), FIPS 06 Location: 39.920539 N, 121.298918 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Tobin, CA Tobin