Skip to Main Content

Census Data Resources: Understanding the Data

Guide to (mostly online) resources for manipulating and extracting Census data.

About the Surveys

The American Community Survey (ACS) replaced the decennial long form beginning in 2005.  While the subjects are very similar between the ACS and the decennial long form, the survey methodology is substantially different.  Variables, even with the same name, may not be comparable between the two surveys.


View brief (less than 5-minute) videos about frequently asked Census questions: 

Maki images courtesy of Mapbox

Questions Asked and Subjects Included in the Decennial Censuses and the ACS


ACS Documentation

Decennial Documentation


Profile Photo
Michele Hayslett
My pronouns are she, her, hers.
Data Management
Numeric Data
Census Data
Locating Data

If you would like to request we acquire data, please carefully read the guidelines at

Social: YouTube Page