Work with interactive mapping tools from across the Census Bureau.
Collection of audio features and sound bites.
The Census Bureau packages data and information into easy-to-understand visuals.
Browse Census Bureau images.
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.
How we provide the best mix of timeliness, relevancy, quality, and cost for the data we collect.
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 Census Bureau.
Explore Census programs targeted for particular needs.
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.
Listen to audio files on fun facts, historical figures, and celebrations of the month.
Find media toolkits, advisories, and all the latest Census news.
See what's coming up in releases and reports.
Morris H. Hansen was, perhaps, the most influential statistician in the evolution of survey methodology in the 20th century. Early in his Census Bureau career, Hansen assembled and directed a team of mathematical statisticians and other survey methodologists. The team defined and researched the principal problems in the taking of surveys and developed the statistical methods needed for large-scale national surveys. These included formal quality control methods and the derivation of theory and models for analyses of non-sampling errors. He co-authored (with William N. Hurwitz and William C. Madow, also Census Bureau employees) a two-volume statistical text, Sample Survey Methods and Theory. In Revolution in United States Statistics, Joseph Duncan and William Shelton called the second volume, "Theory", "the most important book produced by federal employees on sampling and one of the most important books on methods produced as an offshoot from the federal statistical system." Interview conducted on June 22, 1983. [516KB PDF]