San Diego is the eighth largest city in the United States, second-largest city in California and 46th largest city in the Americas. Located along the Pacific Ocean on the west coast of the United States, San Diego has a population of 1,359,132 (Jan 2010). The city is also the county seat of San Diego County as well as the economic center of the San Diego?Carlsbad?San Marcos Metropolitan Area considered congruent with the countySan Diego's economy is largely composed of agriculture, biotechnology/biosciences, computer sciences, electronics manufacturing, defense-related manufacturing, financial and business services, ship repair, ship construction, software development, telecommunications, wireless research, and tourism.