Best Choices:
Social Explorer
Demographic data, maps, and profile reports of the United States.
eMarketer
Detailed marketing data. See the video tutorial.
Statista
Provides access to recent statistics and studies including market researchers, trade organizations, scientific journals, and government databases.
Also Try:
Data from the U.S. Census Bureau. Access to social science data and analysis tools. Demographic data for New York City, New York State, and the United States. See the video tutorial. Data from the U.S. Census Bureau..American FactFinder (now known as U.S. Census Bureau)
ICPSR (Inter-university Consortium for Political and Social Research) — must create login
Infoshare Online
U.S. Census Bureau (formerly American Fact Finder)
Research Guides
A library research guide for how to find Census data online. A library research guide for finding online information about the demographics of New York neighborhoods. A library research guide for statistical resources.Finding and Using Census Data
New York City Neighborhood Demographics
Statistical Resources