The City of Los Angeles (Cityof Los Angeles, often abbreviated as L.A.) is a city located in the southern part of the West Bank of the United States, according to the population ranking, Los Angeles is California's largest city (with more than 4 million inhabitants) and the second largest city in the United States, after New York City. It has an area of 469.1 square miles (1214.9 square kilometers). The Los Angeles-Long Tree-Santa Anna metropolitan district has 13 million inhabitants. The Los Angeles area has a larger range, including five counties, about 18 million inhabitants. The world's largest city in the global and world-class urban research group network with the world-class urban list. Los Angeles is known as the world's first-class city in the field of science and music on September 4, 1781 and