Social Security Crosswalk: Older Version
The crosswalk is intended for use with IPUMS data extracts.
Crosswalk version 1.2
Released April 2024, replaced July 2025.
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The crosswalk file contains Social Security Number and the HISTIDs that identify the corresponding person across census years.
The linking procedure was similar to that used for census-to-census linking, modified to account for the lack of household contextual information and for variables not present in the Social Security records. Users should note that the Numident links to an individual across multiple census years do not always agree with the census-to-census links.
Jonas Helgertz, Nesile Ozder, Steven Ruggles, John Robert Warren, Catherine A. Fitch, J. David Hacker, Matt A. Nelson, Joseph P. Price, Evan Roberts, and Matthew Sobek. IPUMS Multigenerational Longitudinal Panel: Version 1.2 [dataset]. Minneapolis, MN: IPUMS, 2024. https://doi.org/10.18128/D016.V1.2
Contact us
For questions about IPUMS MLP, contact ipumsres@umn.edu.
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