Benicia, CA -- U.S. city in California Population (2000): 26865 Housing Units (2000): 10547 Land area (2000): 12.899822 sq. miles (33.410384 sq. km) Water area (2000): 2.695345 sq. miles (6.980911 sq. km) Total area (2000): 15.595167 sq. miles (40.391295 sq. km) FIPS code: 05290 Located within: California (CA), FIPS 06 Location: 38.063360 N, 122.156158 W ZIP Codes (1990): 94510 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Benicia, CA Benicia