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MLP Crosswalk Files

Data files

The MLP crosswalks contain IDs that link persons between census years and a variable (ROUND) that identifies the stage of the linking process under which the link was made. The files are intended for use with IPUMS data extracts. See the user guide.

The crosswalk files listed above are Version 1.1, released March 2023. The Version 1.0 crosswalk files (September 2020) are available here.

Citation and terms of use

To download these data, you must agree to IPUMS USA terms of use. To check your account status or register to use IPUMS USA, see account options.

1. Redistribution: You will not redistribute the data without permission:

You may not redistribute IPUMS MLP crosswalks. You may not redistribute any data from IPUMS-USA Full Count data that are linked to the MLP crosswalks.

2. Cite both IPUMS MLP and the Full Count IPUMS Ancestry data:

Jonas Helgertz, Steven Ruggles, John Robert Warren, Catherine A. Fitch, Ronald Goeken, J. David Hacker, Matt A. Nelson, Joseph P. Price, Evan Roberts, and Matthew Sobek. IPUMS Multigenerational Longitudinal Panel: Version 1.1 [dataset]. Minneapolis, MN: IPUMS, 2023.

Steven Ruggles, Catherine A. Fitch, Ronald Goeken, J. David Hacker, Matt A. Nelson, Evan Roberts, Megan Schouweiler, and Matthew Sobek. IPUMS Ancestry Full Count Data: Version 3.0 [dataset]. Minneapolis, MN: IPUMS, 2021.

Publications and research reports making use of IPUMS USA should be added to our Bibliography.

Contact us

For questions about IPUMS MLP, contact

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