What is the population of Greater Los Angeles Area?

As of 2021, the estimated population of the Greater Los Angeles Area (comprising Los Angeles County, Orange County, Riverside County, San Bernardino County, and Ventura County) is about 18.9 million. This makes it the most populous metropolitan area in California and the second most populous metropolitan area in the United States after the New York-Newark- Jersey City, NY-NJ-PA metropolitan area.