The United States of America (USA), commonly known as the United States (U.S.) or America, is a country primarily located in North America and consisting of 50 states, a federal district, five major unincorporated territories, and nine Minor Outlying Islands.[i] It includes 326 Indian reservations. The U.S. is the world’s third-largest country by both land and total area.[c] It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations.[j] With a population of over 333 million,[k] it is the most populous country in the Americas and the third-most populous in the world. The national capital of the United States is Washington, D.C., and its most populous city and principal financial center is New York City.