San Jose ( /ˌsæn hoʊˈseɪ/; Spanish: St. Joseph) is the third-largest city in California, the tenth-largest in the U.S., and the county seat of Santa Clara County which is located at the southern end of San Francisco Bay. The San Jose/Silicon Valley area is a major component of the greater San Francisco Bay Area, a region of 7.5 million people and the sixth largest metropolitan area (CSA) in the United States. It is also the most populous city in Northern California.