Census & Demographic Data

Social Explorer (library subscription)
Provide thousands of interactive data maps and tables going back to 1790. Social Explorer includes:

• Census of Population and Housing data back to 1790 (geographic level varies)
• American Community Survey Data
• Social Explorer Training Modules

data.census.gov
U.S. Census Bureau’s access tool to population, housing, economic, and geographic data from the Census of Population and Housing, Economic Census, American Community Survey, and more.  

• Access data.census.gov tutorials.

SimplyAnalytics (library subscription)
A web-based mapping application for the U.S. including demographic data, census data (back to 1980), crime, business & marketing data, employment, consumer spending, housing, health and more. 

Census Reporter
Generates data visualizations based on census data for a location of interest. You can generate reports and download data too.

National Neighborhood Data Archive (NaNDA)
The National Neighborhood Data Archive (NaNDA) is a publicly available data archive containing measures of the physical, economic, demographic, and social environment at multiple levels of spatial scale (eg, census tract, ZIP code tabulation area, county). Each NaNDA dataset covers all or most of the entire nation (including both rural and urban areas) and represents a set of measures on a single topic of interest, including socioeconomic disadvantage, healthcare, housing, partisanship, and public transit, with temporal coverage dating back to 2000.

Specialized Census Data Tools

Microdata and Individual Responses
Microdata are the individual responses to census questionnaires. Individual response data will allow you to analyze data at the household or person unit and create customized tables. They are limited to locations of 100,000 persons or more.

Normalized Census Tract Boundaries

Longitudinal Tract Database (Brown University) The continual change in geography between successive censuses is a major barrier for longitudinal analysis. Census tracts are fundamental enumeration units for the U.S. decennial censuses and their boundaries very often change over time. In every new census many tracts are split, consolidated, or changed in other ways from the previous boundaries to reflect population growth or decline. The LTDB tracks and normalizes tract boundary changes back to 1970.

SimplyAnalytics contains normalized census tract boundaries from 1980 to present.
Social Explorer U.S. Census Comparability Data for 2000 to 2010.