Los Angeles—often known simply as L.A. or informally as the City of Angels—is the largest city in the state of California and the second-largest in the United States. As of the 2004 U.S. Census estimate, the city had a population of 3.85 million. The city is the core cultural and economic center of the Los Angeles–Long Beach–Santa Ana metropolitan area with a population of 12.9 million.

Los Angeles was incorporated as a municipality on April 4 1850—five months before California achieved statehood—and is the county seat of Los Angeles County. The city has a global presence as a center of culture, science, and higher education. Los Angeles is arguably the world's leading producer of popular entertainment—such as motion pictures, television, and recorded music—lending the city an extraordinary measure of international fame.

Los Angeles is also one of the most cosmopolitan places in the world—it is home to people from virtually every nation on Earth. The city has hosted two Olympic Games—in 1932 and 1984—and is home to world-renowned scientific and cultural institutions. People have long been attracted to the world-class city for its balmy weather, unique and vibrant lifestyle, laid-back energy, Pacific Rim Gateway status, and the hope of realizing the "American Dream."