Los Angeles, officially the City of Los Angeles and often known by its initials L.A., is the largest city in California. With an estimated population of nearly four million people, it is the country's second most populous city and the third most populous city in North America. Los Angeles is known for its Mediterranean climate, ethnic diversity, Hollywood entertainment industry, and its sprawling metropolis.
Los Angeles lies in a basin in Southern California, adjacent to the Pacific Ocean, with mountains as high as 10,000 feet, and deserts. The city, which covers about 469 square miles, is the seat of Los Angeles County, the most populous county in the United States. The Los Angeles metropolitan area is home to 13.1 million people, making it the second-largest metropolitan area in the nation after New York. Greater Los Angeles includes metro Los Angeles as well as the Inland Empire and Ventura County. It is the second most populous U.S. combined statistical area, also after New York, with a 2015 estimate of 18.7 million people.
Home to the Chumash and Tongva, Los Angeles was claimed by Juan Rodríguez Cabrillo for Spain in 1542.