Largest built-up urban area in the world

What to remember

With 11,344 km² of built-up land, the New York urban area, in the United States, is the largest in the world. It is home to 20,892,000 people, with an urban density of 1,842 inhabitants per km².

Greater New York, also called the Tri-State area, is centred on New York City. In its broadest definition it brings together 31 counties and 725 municipalities across four states: much of Downstate New York, including Long Island and the lower Hudson Valley, northern and central New Jersey and Southwestern Connecticut. Measured over its whole urban landmass, the metropolitan area covers 12,093 km².

At the 2020 census, Greater New York had 20,140,470 inhabitants. It was then the only metropolitan statistical area in the United States with more than 20 million residents, and it also forms the largest metropolitan economy in the world.