New York, often called New York City (NYC), is the most populous city in the United States. It is located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive with its respective county. The city is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerce, culture, technology, entertainment and media, academics and scientific output, the arts and fashion, and, as home to the headquarters of the United Nations, international diplomacy.

With an estimated population in 2024 of 8,478,072 distributed over 300.46 square miles (778.2 km²), the city is the most densely populated major city in the United States. New York City has more than double the population of Los Angeles, the nation's second-most populous city. With more than 20.1 million people in its metropolitan statistical area and 23.5 million in its combined statistical area as of 2020, New York City is one of the world's most populous megacities. The city and its metropolitan area are the premier gateway for legal immigration to the United States. As many as 800 languages are spoken in New York City, making it the most linguistically diverse city in the world.