Brooklyn is the most populous borough of New York City, with an estimated 2,648,771 residents in 2017. Named after the Dutch village of Breukelen, it borders the borough of Queens at the western end of Long Island. Brooklyn has several bridge and tunnel connections to the borough of Manhattan across the East River, and the Verrazzano-Narrows Bridge connects Staten Island. Since 1896, Brooklyn has been coterminous with Kings County, the most populous county in the U.S. state of New York and the second-most densely populated county in the United States, after New York County (which is coextensive with the borough of Manhattan).
With a land area of 71 square miles (180 km2) and water area of 26 square miles (67 km2), Kings County is New York state's fourth-smallest county by land area and third-smallest by total area, though it is the second-largest among the city's five boroughs. Today, if each borough were ranked as a city, Brooklyn would rank as the third-most populous in the U.S., after Los Angeles and Chicago.