San Diego is named after Saint Didacus, San Diego is the ninth largest city in the United States and second largest city in California, located along the Pacific Ocean on the west coast of the United States. The city population is 1,353.993 as estimated by The California Department of Finance. 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. San Diego's biggest industries are manufacturing, the military, and tourism.

San Diego's economy is largely composed of electronics manufacturing, defense-related manufacturing, financial and business services, ship-repair, agriculture, biotechnology/biosciences, Screen Printing, Custom Printing, Digital Printing, Jumbo Printing, All Over Printing, computer sciences, ship-construction, software development, telecommunications, wireless research, and tourism. The presence of the University of California, San Diego (UCSD) with the affiliated UCSD Medical Center promotes research in biotechnology.