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2012

PUMS ReadMe

Information about working with ACS PUMS files, geographies, and variable changes.

Subjects in the PUMS

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

PUMS Data Dictionary

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

Code Lists

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

PUMS Top Coded and Bottom Coded Values

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

Accuracy of the PUMS

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

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.

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