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Public Use Microdata Areas. Minimum population: 100,000Super-PUMAs will not be defined.Anticipate publication of proposed criteria in Federal Register, Summer 2010.Delineation program expected start: Spring 2011.SDCs will delineate PUMAs.. Public Use Microdata Areas. PUMAs will be used to t
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1. Census Geographic Area Programsand Geographic Products Update Michael Ratcliffe
Geography Division
US Census Bureau
Let’s Focus on Census Geography Workshop
GIS-T
April 11, 2010 1
2. Public Use Microdata Areas Minimum population: 100,000
Super-PUMAs will not be defined.
Anticipate publication of proposed criteria in Federal Register, Summer 2010.
Delineation program expected start: Spring 2011.
SDCs will delineate PUMAs.
3. Public Use Microdata Areas PUMAs will be used to tabulate and present data for:
2010 Census Public Use Microdata Sample (PUMS) Files
American Community Survey PUMS Files
American Community Survey 1-year data
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4. PUMAs follow county boundaries where possible.May cover large land areas due to minimum population requirement. 4
5. Counties with populations greater than 200,000 may contain multiple PUMAs.Census tracts may be aggregated to form PUMAs. 5
6. Traffic Analysis Zones Two types of areas:
Traffic Analysis Zones
Defined based on 2010 census blocks
Traffic Analysis Districts
Aggregations of TAZs
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7. Traffic Analysis ZonesDraft Program Schedule 7
8. Traffic Analysis Zones TAZ Delineation Software:
MAF/TIGER Partnership Software will be utilized
Block Equivalency Files
Caliper Corporation has reviewed and commented on software requirements
Census Bureau will need a list of counties (towns in New England) associated with each MPO 8
9. Statistical Areas Program Census tracts
Block groups
Census county divisions
Census designated places
Delineated areas were entered into the MAF/TIGER data base December 2009
Currently verifying final boundaries
10. Statistical Areas No longer just for the decennial census! ACS will tabulate data for all statistical areas Economic Census data tabulated for CDPs: 5,000 or more people 5,000 or more workers 10