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U.S. Population Migration Data

U.S. Department of Education Releases College Scorecard Data

Big changes coming to IRBs . . . . still time to comment

Will this be an election issue in the US?

U.S. and World Population Clock Has Been Updated with New Features

PUMA Equivalency Files (1980, 1990, 2000)

a PSC Data Resource

Resource Source:PSC


This resource provides equivalency files with definitions of geographic parts found within the PUMA definitions. Equivalency files document the counties that correspond to PUMAs and vice versa. For instance, there are small counties that are cumulated into a single PUMA and counties like Wayne county, Michigan that have multiple PUMAs.


PUMA Equivalency Files Overview (Source: PSC)
PUMA Equivalency Files (directory style) (Source: PSC)
PUMA Equivalency Files (data style) (Source: PSC)

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