East New York is a residential neighborhood in the eastern section of the borough of Brooklyn in New York City, United States. Its boundaries, starting from the north and moving clockwise, are roughly the Cemetery Belt and the Queens borough line to the north; the Queens borough line to the east; Jamaica Bay to the south, and the Bay Ridge Branch railroad tracks and Van Sinderen Avenue to the west. Linden Boulevard, Pennsylvania Avenue, and Atlantic Avenue are the primary thoroughfares through East New York.

Brooklyn is a borough of New York City. Located on the westernmost end of Long Island, it is coextensive with Kings County in the U.S. state of New York. With 2,736,074 residents as of the 2020 United States census, Kings County is the most populous of the five boroughs of New York City and the most populous county in the State of New York. The population density of Brooklyn was 37,339.9 inhabitants per square mile (14,417.0/km2) in 2022, making it the second-most-densely-populated county in the United States, behind Manhattan, and it had the ninth-highest population of any county nationwide. Were Brooklyn still an independent city, it would be the fourth most populous in the U.S. after the rest of New York City, Los Angeles, and Chicago.