The Bronx is a borough of New York City, coextensive with
Bronx County, in the U.S. state of New York. It is south of Westchester County; north and east of the New York City borough of Manhattan, across the Harlem River; and north of the New York City borough of Queens, across the East River. The Bronx, the only New York City borough not primarily located on an island, has a land area of 42 square miles (109 km
2) and a population of 1,472,654 at the 2020 census. Of the five boroughs, it has the fourth-largest area, fourth-highest population, and third-highest population density.