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.
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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.
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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.
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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.
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The Census Bureau packages data and information into easy-to-understand visuals.
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Developer portal to access services and documentation for the Census Bureau's APIs.
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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.
How we provide the best mix of timeliness, relevancy, quality, and cost for the data we collect.
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.
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Explore the rich historical background of an organization with roots almost as old as the nation.
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The Census Bureau's Director writes on how we measure America's people, places and economy.
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Dual Independent Map Encoding (DIME) is an encoding system developed by the U.S. Census Bureau for efficiently storing geographical data and was a key technical development on the "road" toward the geographic information systems (GIS) used today. The development of DIME was assisted by Census Bureau mathemetician James Corbett. In 1967, researchers were attempting to convert analog maps into numerically encoded renderings using data from the 1967 pretest of mailout/mailback procedures in New Haven, CT, but found the process to be bogged down by redundant operations. Corbett introduced the basic ideas of the vector paradigm to the programmers who then created a protocol called DIME.
Within DIME, intersections, streets, and blocks became analogous to points, lines, and polygons, respectively. The latter group of objects would come to represent the essence of vector data, a structure rooted in Cartesian coordinate geometry. DIME also incorporated the ability to edit topology, a term used to describe the geometric relationships between vector objects.
The file format developed for storing the DIME-encoded data was known as Geographic Base Files (GBF). GBF-DIME files were digitized for all U.S. cities in the 1970s and provided a schematic map of a city's streets, address ranges, and geostatistical codes relating to the Census Bureau's tabular statistical data.
The GBF-DIME files developed in the 1970s and 1980s later became a key component in the development of the Topologically Integrated Geographic Encoding and Referencing (TIGER) system created for the 1990 census.
For more information on the development of DIME, see the September 6, 1968 , Census Bulletin article, "Dime Underwent Lots of Testing Too."