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Code Lists, Definitions, and Accuracy

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Code Lists, Definitions, and Accuracy

View the detailed codes and definitions for variables, statistical testing, and an explanation of sample design, methodology, and accuracy for the American Community Survey.

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2023

Code Lists

Detailed codes for variables that contain a large number of coded responses, such as ancestry and occupation.

xls 2023 Code List [1.0 MB]

Instructions for Applying Statistical Testing

Basic instructions for obtaining the ACS standard errors needed to do manual statistical testing.

pdf 2023 Instructions for Applying Statistical Testing to ACS 1-year and 5-year Data

Subject Definitions

Definitions of population and housing variables to help you understand the results of the American Community Survey

pdf 2023 Subject Definitions [1.4 MB]

Worked Examples for Approximating Margins of Error

Worked Examples on approximating standard errors for various types of ACS estimates.

pdf 2023 Worked Examples for Approximating Margins of Error

Group Quarters Definitions

Definitions for classifying group living situations according to the type of housing and/or services provided

pdf 2023 Group Quarters Definitions [<1.0 MB]

Statistical Testing Tool

Spreadsheet to quickly test whether ACS estimates are statistically different from one another.

web Statistical Testing Tool

Accuracy of the Data

A basic explanation of the sample design, estimation methodology, and accuracy of the data.

pdf 2023 ACS 1-year Accuracy of the Data (US) [<1.0 MB]
pdf 2023 PRCS 1-year Accuracy of the Data (Puerto Rico) [<1.0 MB]

Table Shells and Table List

Learn more about the layout of the tables and information about tables.

web Table Shells and Table List

Comparison Guidance

Learn more about comparing the 2023 ACS with 2020 Census, 2010 Census, and 5-year to 5-year estimates.

web 2023 Comparison Guidance

Jam Values

Character or numeric values used to explain the absence of data.

xls Jam Values [1.0 MB]

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Page Last Revised - July 30, 2024
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