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IPUMS-USA GIS Boundary Files

The links below provide digital boundary files in shapefile format within compressed .zip files.

Information about each file's contents is provided in the shapefile metadata, supplied in an XML document in each .zip file, in the ArcGIS metadata format. To view the metadata in Esri ArcGIS, right-click on a shapefile name in a Catalog window and select "Item Description..." from the drop-down menu.

Public Use Microdata Areas (PUMAs) and County Groups

2010 versions (2010 decennial census and ACS/PRCS samples, 2012-onward):

2000 versions (2000 decennial census and ACS/PRCS samples, 2005-2011):

Earlier versions:

Consistent PUMAs (ConsPUMAs)

State Economic Areas

States, Counties & Other Areas

The National Historical Geographic Information System (NHGIS), another IPUMS project, provides boundary files for states and counties from 1790 through the present, and for many other geographic levels in more recent years.

To join IPUMS USA data with NHGIS boundary files:

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