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# Public-Use Microdata Samples (PUMS)

These files contain records for a sample of housing units with information on the
characteristics of each unit and each person in it. While preserving confidentiality
(by removing identifiers), these microdata files permit users with special data
needs to prepare virtually any tabulation.

PUMS files are available from the American Community Survey and the Decennial Census.
Additional microdata files are available from other surveys.
See the individual listings under Subjects A-Z on the Census Bureau’s home page,
or contact Customer Services on 301-763-INFO (4636).

- American Community Survey
- Census 2000
    Data online
        1-Percent Public Use Microdata Sample (PUMS) Files
            5-Percent Public Use Microdata Sample (PUMS) Files
            PUMS 10% for Guam
            PUMS 10% for U.S. Virgin Islands

      Technical documentation online
        PUMS 1% and 5%
            PUMS 10% for Guam
            PUMS 10% for U.S. Virgin Islands

      Geographic equivalency files online
        A separate geographic equivalency file exists for each state. The files
        are located in each state directory and are named PUMEQS-XX.TXT, where
        "S" represents 1 or 5 and "XX" represents the state
        FIPS code.
        PUMS 1%
            PUMS 5%
- Data online
        1-Percent Public Use Microdata Sample (PUMS) Files
            5-Percent Public Use Microdata Sample (PUMS) Files
            PUMS 10% for Guam
            PUMS 10% for U.S. Virgin Islands
- 1-Percent Public Use Microdata Sample (PUMS) Files
- 5-Percent Public Use Microdata Sample (PUMS) Files
- PUMS 10% for Guam
- PUMS 10% for U.S. Virgin Islands
- Technical documentation online
        PUMS 1% and 5%
            PUMS 10% for Guam
            PUMS 10% for U.S. Virgin Islands
- PUMS 1% and 5%
- PUMS 10% for Guam
- PUMS 10% for U.S. Virgin Islands
- Geographic equivalency files online
        A separate geographic equivalency file exists for each state. The files
        are located in each state directory and are named PUMEQS-XX.TXT, where
        "S" represents 1 or 5 and "XX" represents the state
        FIPS code.
        PUMS 1%
            PUMS 5%
- PUMS 1%
- PUMS 5%
- 1990 Census of Population and Housing
- Data on Diskette
        PUMS 1% and 5%
- PUMS 1% and 5%
- 1980 Census of Population and Housing
    Data on CD-ROM
        The files listed below are available for purchase through the Census
        Bureau’s Catalog.
        Once you are in the catalog, you can locate them by selecting "Census
        1990 & 1980," "Census 1980," and then "Public Use
        Microdata Sample (PUMS) Files."
        1980 Sample 1%
            1980 Sample 5%

      "On-Demand" products
        The following data sets were released on magnetic tape and customers can
        arrange to purchase them on CD-ROM by contacting the Customer Services
        Center at (301) 763-INFO (4636).  Such "on-demand" orders may
        cost more than our standard data products and take longer to process. The
        National Archives also sells these files.
        1980 PUMS - Description
            1980 PUMS A - 5%
            1980 PUMS A - 0.1% National
            1980 PUMS B - 1%
            1980 PUMS B - 0.1% National
            1980 PUMS C - 1%
            1980 PUMS C - 0.1% National
            1980 PUMS A, B and C Samples - Puerto Rico
            1980 American Indian Supplemental Questionnaire PUMS
            1980 PUMS County Group Equivalency File
- Data on CD-ROM
        The files listed below are available for purchase through the Census
        Bureau’s Catalog.
        Once you are in the catalog, you can locate them by selecting "Census
        1990 & 1980," "Census 1980," and then "Public Use
        Microdata Sample (PUMS) Files."
        1980 Sample 1%
            1980 Sample 5%
- 1980 Sample 1%
- 1980 Sample 5%
- "On-Demand" products
        The following data sets were released on magnetic tape and customers can
        arrange to purchase them on CD-ROM by contacting the Customer Services
        Center at (301) 763-INFO (4636).  Such "on-demand" orders may
        cost more than our standard data products and take longer to process. The
        National Archives also sells these files.
        1980 PUMS - Description
            1980 PUMS A - 5%
            1980 PUMS A - 0.1% National
            1980 PUMS B - 1%
            1980 PUMS B - 0.1% National
            1980 PUMS C - 1%
            1980 PUMS C - 0.1% National
            1980 PUMS A, B and C Samples - Puerto Rico
            1980 American Indian Supplemental Questionnaire PUMS
            1980 PUMS County Group Equivalency File
- 1980 PUMS - Description
- 1980 PUMS A - 5%
- 1980 PUMS A - 0.1% National
- 1980 PUMS B - 1%
- 1980 PUMS B - 0.1% National
- 1980 PUMS C - 1%
- 1980 PUMS C - 0.1% National
- 1980 PUMS A, B and C Samples - Puerto Rico
- 1980 American Indian Supplemental Questionnaire PUMS
- 1980 PUMS County Group Equivalency File
- Pre-1980 Census of Population and Housing
    For pre-1980 PUMS data, please visit the National Archives web site at
    National Archives.
- Link to Data Access Tools

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