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PUMS Documentation

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Within Microdata

PUMS Documentation

View the available subjects, detailed codes for variables, changes related to each release, an explanation of sample design, methodology, and accuracy, and files to determine if you are using weights correctly for the American Community Survey Public Use Microdata Sample (PUMS) files. These documents are organized by data year.

Supporting data for the documentation below is available on the Accessing PUMS Data page.

2017
  • 2022
  • 2021
  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
  • 2009
  • 2008
  • 2007
  • 2006
  • 2005
2017

PUMS ReadMe

Important information about 2017 geography and variable changes, as well as guidance for novice ACS PUMS files users.

pdf 2013-2017 ACS 5-year PUMS ReadMe [<1.0 MB]
pdf 2017 ACS 1-year PUMS ReadMe [<1.0 MB]

PUMS Top Coded and Bottom Coded Values

List of variables with responses exceeding a state-specific value that are replaced with a predetermined value.

pdf 2017 ACS PUMS Top & Bottom Coded Variables [PDF] [<1.0 MB]
xls 2017 ACS PUMS Top & Bottom Coded Values [CSV] [<1.0 MB]

Subjects in the PUMS

A list of topics included in each of the housing and population record files

pdf 2013-2017 ACS 5-year PUMS Subjects [<1.0 MB]
pdf 2017 ACS 1-year PUMS Subjects [<1.0 MB]

Accuracy of the PUMS

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

pdf 2013-2017 ACS 5-year PUMS Accuracy [PDF] [<1.0 MB]
xls 2013-2017 ACS 5-year PUMS Design Factors (Attachment A) [CSV] [<1.0 MB]
pdf 2017 ACS 1-year PUMS Accuracy [PDF] [<1.0 MB]
xls 2017 ACS 1-year PUMS Design Factors (Attachment A) [CSV] [<1.0 MB]

PUMS Data Dictionary

Includes variables available for each PUMS release and how each variable is coded

pdf 2013-2017 ACS 5-year PUMS Data Dictionary [<1.0 MB]
txt 2013-2017 ACS 5-year PUMS Data Dictionary [<1.0 MB]
xls 2013-2017 ACS 5-year PUMS Data Dictionary [<1.0 MB]
pdf 2017 ACS 1-year PUMS Data Dictionary [<1.0 MB]
txt 2017 ACS 1-year PUMS Data Dictionary [<1.0 MB]
xls 2017 ACS 1-year PUMS Data Dictionary [<1.0 MB]

PUMS Estimates for User Verification

Note that some of these estimates may be different from the estimates for the same characteristics published in the American FactFinder. For an explanation of these differences, see the Accuracy of the PUMS above.

ftp 2013-2017 ACS 5-year PUMS estimates [SAS] [<1.0 MB]
xls 2013-2017 ACS 5-year PUMS estimates [CSV] [<1.0 MB]
xls 2013-2017 ACS 5-year PUMS record counts [CSV] [<1.0 MB]
ftp 2017 ACS 1-year PUMS estimates [SAS] [<1.0 MB]
xls 2017 ACS 1-year PUMS estimates [CSV] [<1.0 MB]
xls 2017 ACS 1-year PUMS record counts [CSV] [<1.0 MB]

Code Lists

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

xls 2013-2017 ACS 5-year PUMS Code Lists [<1.0 MB]
xls 2017 ACS 1-year PUMS Code Lists [6.8 MB]

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Page Last Revised - March 13, 2024
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