By the Numbers

A list of quantitative resources by private and public agencies about the city.

NYC Open Data
NYC Open Data makes the wealth of public data generated by various New York City agencies and other City organizations available for public use. As part of an initiative to improve the accessibility, transparency, and accountability of City government, this catalog offers access to a repository of government-produced, machine-readable data sets.

NYC Numeric and Spatial Data, Columbia University Digital Social Science Center
A broad collection of data resources about population, built environment, economic activity, health and vital statistics, etc.

Walk Score
Walk Score is a website that takes a physical address and computes, using proprietary algorithms and various data streams, a measure of its walkability.

Million Dollar Blocks
The United States currently has more than 2 million people locked up in jails and prisons. A disproportionate number of them come from a very few neighborhoods in the country’s biggest cities. In many places the concentration is so dense that states are spending in excess of a million dollars a year to incarcerate the residents of single city blocks. Using rarely accessible data from the criminal justice system, the Spatial Information Design Lab and the Justice Mapping Center have created maps of these “million dollar blocks” and of the city-prison-city-prison migration flow for five of the nation’s cities.