| PUMS files have state-level
Census 2000 data containing individual
records of the characteristics for a 5
percent sample of people and housing units.
The PUMS files contain geographic
units known as super-Public Use Microdata
Areas (super-PUMAs) and Public Use Microdata
Areas (PUMAs). Each super-PUMA contains
a minimum population of 400,000 and each
PUMA contains a minimum population threshold
of 100,000. Geographic equivalency files
that show the relationship between the
PUMA and standard Census 2000 geographic
concepts (e.g., counties, etc.) are included.
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