This chart shows how HOLC classified neighborhoods in NYC.
In the Bronx: much of South and Central Bronx are "redlined" - declared "hazardous."
In Manhattan: much of Harlem, and parts of the east side down to the lower east side, were redlined.
In Brooklyn: large parts of northern and central Brooklyn were Redlined.
In Queens, smaller areas were redlined, but large areas were declared "Declining."
In Staten Island, a few areas on the north shore were redlined.