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.
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.
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.
The first several decennial censuses were very basic. Census-takers only asked a handful of demographic questions, processing and tabulating questionnaires occurred at a local level, and publications were relatively limited. But as the country grew, and policy and business leaders began to recognize the value of census data, questionnaires became longer and tabulation necessarily became more involved.
As the science of statistics advanced, the Census Bureau changed and updated its methodology. The most noteworthy change occurred in 1940, when the Census Bureau introduced statistical sampling in a population census. There have, however, been other important methodological advances, especially in the fields of industrial classification and census-taking.
The 2010 census saw the most dramatic shift in the U.S. Census Bureau's data collection process in decades. The successful launch of the American Community Survey, which is administered continuously throughout the decade, meant that the long-form sample questionnaire was no longer used in the census itself.
As the United States continues to change, the Census Bureau continues to change along with it.