Social Explorer (library subscription)
Provide thousands of interactive data maps and tables going back to 1790. Social Explorer includes:
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.
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.
Generates data visualizations based on census data for a location of interest. You can generate reports and download data too.
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.
NOVA Region Dashboard
|Fairfax County - Maps & Data
Fairfax County Demographics Archives - archive of
demographic reports published by the county.
|Prince William County||DC State Data Center|
|Virginia Employment Commission||Center for Regional Analysis (PDF reports)|
Social Explorer (above) provides historical census data back to 1790. It's a great place to start, but it is not complete. Use the following to supplement Social Explorer or to determine what year data for your area of interest was collected.
Historical Census Publications (Census Bureau)
PDF versions of historical census publications, back to 1790. The following two resources will help you determine which PDF to use:
National Historic GIS (NHGIS) The National Historical Geographic Information System (NHGIS) provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2015.
Integrated Public Use Microdata Series (IPUMS-USA)
For use with statistical analysis software, IPUMS has Census of Population and Housing microdata for social and economic research back to 1790. Can select variables and customize dataset before downloading.
Visualization of the Evolution of the American Census (The Pudding)
Visualization of what census questions changed and what have stayed the same.