Public Use Microdata Sample (PUMS) - 1990 Samples
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STIPULATIONS FOR USE: Access Restricted to Penn State researchers and members of the Association of Population Centers (APC). The files prepared below were obtained from ICPSR. ICPSR does not allow redistribution to third party users beyond Penn State or the APC (permission to redistribute within the APC granted by ICPSR).
DESCRIPTION: The 1990 Public Use Microdata Sample (PUMS) contains household and person records for a sample of housing units that received the "long form" of the 1990 Census questionnaire. Data items include the full range of population and housing information collected in the 1990 Census, including 500 occupation categories, age by single years up to 90, and wages in dollars up to $140,000. Each person identified in the sample has an associated household record, containing information on household characteristics such as type of household and family income.
The Public Use Microdata Samples from the 1980 Census contain individual and household level information form the "long-form" questionnaires distributed to a sample of the population enumerated in the Census. Each of the PUMS files contains two types of records: "household" records and "person" records.
The 1970 Public Use Samples consist of 132 discrete data files. Each 1970 Public Use Sample is a representative sample of the records for the 1970 census sample questionnaires. The primary sample size is one-in-a-hundred or one sample unit (household, vacant unit, or person in group quarters) for every one hundred units such units in the population. For each household, information is provided about the housing unit itself as well as the characteristics of each person therein.
ORIGINATING AGENCY / PRINCIPAL INVESTIGATOR(S): United States Census Bureau
RELATED WEB SITES:
Census Bureau PUMS Web Page
CIESIN PUMS Web Page
Integrated Public Use Microdata Series Web Site
PUMS files on SodaPop
The PUMS data has been reshaped from its original hierarchical format into a rectangular person-level file with household data attached to each person.All empty households have been deleted.
In order to uniquely identify a person in the PUMS, PRI has created a variable ID which is a combination of the state FIP code, SERIALNO and a sequential person number within the household for each person record.
Using the full US 5pct Sample:
Do not attempt to access the full US 5pct Sample table in an interactive session. It is simply too large. A good strategy is to go through a trial extract on a single state -- selecting variables and establishing selection criteria. When you are satisfied with your code, save it and change the SAS table name to point to the US file -- pums905p.usThis is the 1993 re-release version of the PUMS data and was downloaded on 2/12/98 to PRI. It includes some changes from the earlier version involving the Texas file and the variables POWSTATE, MIGPUMA, PSA, MIGSTATE, POWPUMA.
DATA DISSEMINATED BY: ICPSR
