Work with interactive mapping tools from across the Census Bureau.
Official audio files from the Census Bureau, including "Profile America," a daily series of bite-sized statistics, placing current data in a historical context.
Infographics include information on the Census Bureau's history of data collection, our nation's veterans and the American Community Survey.
Read briefs and reports from Census Bureau experts.
Watch Census Bureau vignettes, testimonials, and video files.
Read research analyses from Census Bureau experts.
Developer portal to access services and documentation for the Census Bureau's APIs.
Explore Census Bureau data on your mobile device with interactive tools.
Find a multitude of DVDs, CDs and publications in print by topic.
These external sites provide more data.
Download extraction tools to help you get the in-depth data you need.
Explore Census data with interactive visualizations covering a broad range of topics.
Information about the U.S. Census Bureau.
Information about what we do at the U.S. Census Bureau.
Learn about other opportunities to collaborate with us.
Explore the rich historical background of an organization with roots almost as old as the nation.
Explore prospective positions available at the U.S. Census Bureau.
Information about the current field vacancies available at the U.S. Census Bureau Regional Offices.
Discover the latest in Census Bureau data releases, reports, and events.
The Census Bureau's Director writes on how we measure America's people, places and economy.
Find interesting and quirky statistics regarding national celebrations and major events.
Profile America is a daily, 60-second feature that uses interesting vignettes for that day to highlight information collected by the Census Bureau.
Find media toolkits, advisories, and all the latest Census news.
See what's coming up in releases and reports.
What data processing options are available?
Options available online from the Census website include the ASCII text data files (1% and 5% samples) and DataFerret (1% and 5% samples). The software enhanced DVD disc product can be used to create summary data tables.
What is a Public Use Microdata Area (PUMA)?
A Public Use Microdata Area (PUMA) is a decennial census area for which the Census Bureau provides specially selected extracts of raw data from a small sample of long-form census records that are screened to protect confidentiality. These extracts are referred to as "public use microdata sample (PUMS)" files. More information
Do I need to use Public Use Microdata Areas?
If you are interested in producing estimates for a state as a whole, you do not need to reference Public Use Microdata Areas. You will need to use Public Use Microdata Areas to produce estimates for counties and places.
Can I get data at the county and place levels from PUMS?
Summary data can be produced from the PUMS 1% file for counties and places with a minimum population of 400,000. Summary data can be produced from the PUMS 5% file for counties and places with a minimum population of 100,000. There are no county or place codes in the actual data files so the value of pums1 (Super-PUMA) or pums5 (PUMA) must be used. Maps and/or equivalency files can be used to determine which Super-PUMA(s) or PUMA(s) to use.
How do I use an equivalency file or map to match counties, places or other geography to Public Use Microdata Areas?
Let's view the New York PUMS 5% equivalency file as an example. What PUMAs make up Saratoga County? If you search the page (Click on Edit, then Find or Search from internet browser menu) for all occurances of "Saratoga County", you'll find that PUMAs 02201, 02202 make up the geographic equivalent of Saratoga County. This can be confirmed by looking at the fourth column of each occurance or by looking at the first PUMA record immediately above each occurance.
You can also use the PUMA maps (see below).
The maps are in PDF format. Click on Edit, then Find within Adobe Acrobat to search for all occurances of a specific area name in the document. This should allow you to search the entire document. If not, try downloading a local copy of the PDF file by right clicking on the PDF link and selecting "Save Target As" and then opening it in your desktop version of the Adobe reader.