SAP Metadata Portal

Integrated Public Use Microdata Series (IPUMS) is the world's largest individual-level population database. IPUMS consists of microdata samples from United States and international census records, as well as data from U.S. and international surveys. IPUMS data includes name, age, gender, place of birth, income, race or ethnicity, marital status, education, and employment. This is a Census copy of the IPUMS data for use in the FSRDC. This dataset contains historical IPUMS data. For the 1940 data, request the 1940 IPUMS data (1026)

Data Access

Access modality

FSRDC

Usage restrictions

Census Bureau restricted-use data must be used for statistical purposes and cannot be used for purposes of enforcing laws or regulations or for profit.

Public Use File available

Yes

Summary of differences

The Census Bureau makes the restricted IPUMS version of the data available along with a PIK crosswalk for linkage to modern data (see IPUMS 1940 crosswalk). Researchers must also obtain approval from IPUMS for the use of these data, which is faciliated by the Census Bureau.

Geography differs from restricted-use file (RUF)

Yes

Variable detail differs from Restricted Use File (RUF)

Yes

Census IPUMS Research

Description

Data Access