San Jose, officially San José, is the largest city in Northern California by both population and area. San Jose is notable as a center of innovation, for its affluence, Mediterranean climate, and extremely high cost of living. As of June 2021, the San Jose metropolitan area has the highest percentage of million-dollar (or more) homes in the United States. Its connection to the booming high tech industry phenomenon known as Silicon Valley sparked Mayor Tom McEnery to adopt for the city the motto of “Capital of Silicon Valley” in 1988. San Jose is one of the wealthiest major cities in the United States and the world, and has the third-highest GDP per capita in the world (after Zürich, Switzerland and Oslo, Norway), according to the Brookings Institution.