The World's Ten Biggest Metropolitan Areas

7. Los Angeles, United States
Metropolitan area: 17.9 million people
City: 3.9 million people

Los Angeles is the biggest city in the United States by land size. An extensive grid of freeways, boulevards, and smaller neighborhood roads spans the city.

Urban Detail:
Los Angeles is home to the largest Mexican, Guatemalan, and Korean population outside of those countries. Almost 40 percent of the city’s population was born outside the United States. (Photo: Reuters)