Fortuna, CA -- U.S. city in California Population (2000): 10497 Housing Units (2000): 4414 Land area (2000): 4.815261 sq. miles (12.471469 sq. km) Water area (2000): 0.000055 sq. miles (0.000142 sq. km) Total area (2000): 4.815316 sq. miles (12.471611 sq. km) FIPS code: 25296 Located within: California (CA), FIPS 06 Location: 40.586742 N, 124.146101 W ZIP Codes (1990): 95540 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Fortuna, CA Fortuna