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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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2009

Code Lists

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

pdf 2009 Code Lists [4.9 MB]

Subject Definitions

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

pdf 2009 Subject Definitions [6.5 MB]

Group Quarters Definitions

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

pdf 2009 Group Quarters Definitions [<1.0 MB]

Comparison Guidance

Learn more about comparing the 2009 ACS with Census 2000, 3-year to 3-year, or 5-year to 5-year estimates.

web 2009 Comparison Guidance

Instructions for Applying Statistical Testing

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

pdf 2009 Instructions for Applying Statistical Testing to ACS 1-year Data [<1.0 MB]
pdf 2007-2009 & 2005-2009 Instructions for Applying Statistical Testing to ACS Multiyear Data [<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 2007-2009 & 2005-2009 Multiyear Accuracy (US) [4.1 MB]
pdf 2007-2009 & 2005-2009 Multiyear Accuracy (Puerto Rico) [6.6 MB]
pdf 2009 ACS 1-year Accuracy of the Data (US) [5.4 MB]
pdf 2009 PRCS 1-year Accuracy of the Data (Puerto Rico) [5.3 MB]

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Page Last Revised - August 18, 2023
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