 In the late 20th century, a smaller wave of Russian Jews and Ukrainian Jews settled in the Brighton Beach section in Brooklyn, and New York has many Israeli-American residents.The intense development, urbanization and suburban sprawl of New York City makes it the most populated region in the U.S., an estimated 20 to 30 million in the eight-state Megalopolis stretching 500 miles from Boston to Washington, D.C., with New York City in the middle has 15 million residents in a 100-mile radius including Philadelphia (1.5 million in its city limits), northern New Jersey and Connecticut.The bulk of New York's population lives within two hours of New York City.