San Diego is the second-largest city in California and the ninth largest city in the United States, located along the Pacific Ocean on the west coast of the United States. The California Department of Finance estimates the city's population at 1,353,993 as of January 1, 2009. This coastal 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. As of 2008, this metropolitan area is the 17th-largest in the United States with a population of 3,001,072 and the 38th-largest metropolitan area in the Americas when including Tijuana, Mexico. According to Forbes the city of San Diego ranks as the fifth wealthiest in the United States. Tourism remains San Diego's third-biggest industry, behind manufacturing and the military. San Diego's economy is largely composed of agriculture, biotechnology/biosciences, computer sciences, electronics manufacturing, defense-related manufacturing, financial and business services, ship-repair and construction, software development, telecommunications, and tourism.