Here is a map showing the results from the last US census for New York City.
Use Map Layers to select the items you wish to see on the map. If you select Census Tracts, you can click on any area of the map to see a demographic breakdown of responses from that tract. If you click in area if the map while the Census Tracts box is selected, you will also get a list of schools in that area.
Use the slide on the left of the map to zoom in or out. Also, you can hold down the shift key and use your mouse to select an area you would like to zoom in on.