Does IPUMS keep track of historical voting district boundaries throughout the United States? If so, where could they be found?
IPUMS NHGIS has boundary data (shapefiles) for U.S. voting districts for census years from 1990 to 2020.
To find them, go to the NHGIS Data Finder, apply a GEOGRAPHIC LEVELS filter for the Voting District/Remainder level, and click on the “GIS FILES” tab under SELECT DATA.
For more guidance on using the NHGIS Data Finder, see the User Guide.
Do you have any records of mid-decade changes?
No, our base source is the Census Bureau TIGER/Line Files. To my knowledge, those include voting district boundaries only for decennial census years.
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