Where can I find more information about subjects included in the American Community Survey (ACS)?

There are many ways to learn about subjects in the American Community Survey (ACS).

• Subjects Included in the Survey links to ACS tables for each subject or topic on data.census.gov.
• The Sample ACS & PRCS Forms and Instructions page shows you how particular questions were asked each year.
• The Subject Definitions, available on the Code Lists, Definitions, and Accuracy page, describe population and housing variables to help you understand how questions are designed, how subjects are defined, and how estimates are calculated. The subject definitions also include information about the history and comparability of each subject.
• If you are interested in how these estimates are used, you can learn more on the Why We Ask Each Question page.