Seaside, CA -- U.S. city in California Population (2000): 31696 Housing Units (2000): 11005 Land area (2000): 8.825689 sq. miles (22.858429 sq. km) Water area (2000): 0.131820 sq. miles (0.341413 sq. km) Total area (2000): 8.957509 sq. miles (23.199842 sq. km) FIPS code: 70742 Located within: California (CA), FIPS 06 Location: 36.615810 N, 121.833957 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Seaside, CA Seaside