Introducing a new way to navigate by topics. Access the latest news, data, publications and more around topics of interest.
Our population statistics cover age, sex, race, Hispanic origin, migration, ancestry, language use, veterans, as well as population estimates and projections.
This section provides information on a range of educational topics, from educational attainment and school enrollment to school districts, costs and financing.
We measure the state of the nations workforce, including employment and unemployment levels, weeks and hours worked, occupations, and commuting.
Our statistics highlight trends in household and family composition, describe characteristics of the residents of housing units, and show how they are related.
Health statistics on insurance coverage, disability, fertility and other health issues are increasingly important in measuring the nation's overall well-being.
We measure the housing and construction industry, track homeownership rates, and produce statistics on the physical and financial characteristics of our homes.
The U.S. Census Bureau is the official source for U.S. export and import statistics and regulations governing the reporting of exports from the U.S.
The U.S. Census Bureau provides data for the Federal, state and local governments as well as voting, redistricting, apportionment and congressional affairs.
Search an alphabetical index of keywords and phrases to access Census Bureau statistics, publications, products, services, data, and data tools.
Geography provides the framework for Census Bureau survey design, sample selection, data collection, tabulation, and dissemination.
Geography is central to the work of the Bureau, providing the framework for survey design, sample selection, data collection, tabulation, and dissemination.
Find resources on how to use geographic data and products with statistical data, educational blog postings, and presentations.
The Geographic Support System Initiative will integrate improved address coverage, spatial feature updates, and enhanced quality assessment and measurement.
Work with interactive mapping tools from across the Census Bureau.
Find geographic data and products such as Shapefiles, KMLs, TIGERweb, boundary files, geographic relationship files, and reference and thematic maps.
Metropolitan and micropolitan areas are geographic entities used by Federal statistical agencies in collecting, tabulating, and publishing Federal statistics.
Find information about specific partnership programs and learn more about our partnerships with other organizations.
Definitions of geographic terms, why geographic areas are defined, and how the Census Bureau defines geographic areas.
We conduct research on geographic topics such as how to define geographic areas and how geography changes over time.
Visit our library of Census Bureau multimedia files. Collection formats include audio, video, mobile apps, images, and publications.
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.
Access data through products and tools including data visualizations, mobile apps, interactive web apps and other software.
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.
Learn more about our data from this collection of e-tutorials, presentations, webinars and other training materials. Sign up for training sessions.
Explore Census data with interactive visualizations covering a broad range of topics.
Learn how we serve the public as the most reliable source of data about the nation's people and economy.
Information about the U.S. Census Bureau.
Information about what we do at the U.S. Census Bureau.
Our researchers explore innovative ways to conduct surveys, increase respondent participation, reduce costs, and improve accuracy.
Our surveys provide periodic and comprehensive statistics about the nation, critical for government programs, policies, and decisionmaking.
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.
A disclosure would occur if someone could infer data values (e.g. dollar value of sales) for a particular business, that has provided information via a census or sample survey form, under a pledge of confidentiality.
The Census Bureau is committed to confidentiality and constantly pursues new procedures, technologies, and methodologies to safeguard individual data.
Disclosure avoidance is the process for protecting the confidentiality of data. The Census Bureau uses two methods of preventing disclosure of business data, cell suppression and noise infusion.
Some of the data in economic census tables are withheld to protect the confidentiality of information reported by individual businesses. Data withheld are replaced with D’s in appropriate data cells.
Cell suppression protects the confidentiality of individual businesses by replacing cell values with symbols in tables, where the amount of the cell if it were known, would allow one to estimate a single contributor’s value too closely. This occurs when there are very few contributors, or when there are one or two large contributors that dominate the aggregate statistic.
The cells that must be protected are called primary suppressions.
To make sure the primary suppressions cannot be closely estimated by subtracting the other cells in the table from the higher-level totals, additional cells may also be suppressed. These additional suppressed cells are called complementary suppressions.
The process of suppression does not usually change the higher-level totals. Values for cells that are not suppressed remain unchanged. Before the Census Bureau releases data, computer programs and analysts check published tables for both primary and complementary disclosures.
Establishment counts are not considered to be disclosures, so this information is published in all tables.
Rounding, either from the way data is collected or published, may effect whether a small number is considered a primary.
Ranges are sometimes used in place of D’s to suppress sensitive data, but still provide meaningful information.
Background on cell suppression, cell sensitivity and the protection of statistical data can be obtain from the Federal Committee on Statistical Methodology's Working Paper 22.
Cell Suppression is used by the following programs:
Noise infusion is an alternative to cell suppression, that allows for the publishing of more data. By marginally adjusting (perturbing) each respondent's data, data for individual businesses can be camouflaged. Most of the resulting aggregated statistics are distorted by a relatively small amount. Some cells may be suppressed for additional protection from disclosure, or because the quality of the data does not meet publication standards. Though some of these suppressed cells may be derived by subtraction, the results are not official and may differ substantially from the true estimate.
Noise infusion is applied to the following economic tables:
For more technical information on noise infusion, read "Using Noise for Disclosure Limitation of Establishment Tabular Data" [PDF 105KB] by Timothy Evans, Laura Zayatz and John Slanta in the Journal of Official Statistics (1998).
The Census Bureau is bound by Title 13 and Title 26 of the United States Code. Title 13 provides the authority to conduct censuses and surveys, and both Titles 13 and 26 provide strong protections for information collected from individuals and businesses.
Other federal laws, including the Confidential Information Protection and Statistical Efficiency Act [PDF 80KB] and the Privacy Act, also reinforce these protections.