Los Angeles is a metropolis.
Los Angeles . With a census-estimated 2017 population of 4,042,000 , it is the second-most populous city in the United States ( after New York City ) and the most populous city in the state of California . The Los Angeles combined statistical area ( CSA ) also has a gross metropolitan product ( GMP ) of $ 831 billion , making it the third-largest in the world , after the Greater Tokyo and New York metropolitan areas .