Located across the East River from Manhattan, Brooklyn is the most populous of all five New York City boroughs. Brooklyn covers 71 square miles of the land mass shared with Queens. Within its boundaries are thousands of acres of parks, seven miles of beaches and 65 miles of shoreline. The terrain is flat to gently sloping. Brooklyn is bordered to the east and south by the Atlantic Ocean, to the west by the Upper Bay and to the north by Queens.
The borough of Brooklyn, with a population of nearly 2.6 million, is located entirely within Kings County and is divided into 18 community districts, many of which have been made famous in movies, books and television. One of the most well-known districts is 13, which includes Coney Island and Brighton Beach. The most populous is Community District 18, containing Flatlands, Mill Basin, Canarsie, Marine Park, and Bergen Beach.