population los angeles metro area
Throughout the 20th century, it was one of the fastest-growing regions in the United States, although growth has slowed since 2000. As of the 2010 U.S. Census, the Los Angeles Metropolitan Statistical Area had a population of nearly 13 million residents. Meanwhile, the larger metropolitan region's population at the 2010 census was estimated to be over 17.8 million residents, and a 2015 estimate reported a population of about 18.7 million.
It's also the 66th most populous city proper in the world, and the metropolitan area is the 18th largest. According to the 2010 Census, the Los Angeles metropolitan area had a population of more than 12.8 million residents, while the larger metropolitan region had an estimated population of 18.1 million.