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2016-2020 American Community Survey 5-year estimates are now available, including the Public Use Microdata Sample (PUMS) Files and Variance Replicate Estimate (VRE) Tables.
View the detailed codes and definitions for variables, statistical testing, and an explanation of sample design, methodology, and accuracy for the American Community Survey.
Detailed codes for variables that contain a large number of coded responses, such as ancestry and occupation
Definitions of population and housing variables to help you understand the results of the American Community Survey
Definitions for classifying group living situations according to the type of housing and/or services provided
Learn more about comparing the 2018 ACS with Census 2000, 2010 Census, and 5-year to 5-year estimates.
Learn more about the layout of the tables and information about tables.
Basic instructions for obtaining the ACS standard errors needed to do manual statistical testing.
Worked Examples on approximating standard errors for various types of ACS estimates.
Spreadsheet to quickly test whether ACS estimates are statistically different from one another.
A basic explanation of the sample design, estimation methodology, and accuracy of the data.
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Learn how to contact the American Community Survey if you have questions about completing the survey, finding data, or using data.
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