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. |