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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.
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The Geographic Support System Initiative will integrate improved address coverage, spatial feature updates, and enhanced quality assessment and measurement.
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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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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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The Census Bureau's Director writes on how we measure America's people, places and economy.
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Profile America is a daily, 60-second feature that uses interesting vignettes for that day to highlight information collected by the Census Bureau.
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For 2007 and prior, we modeled health insurance coverage as measured by the Annual Social and Economic Supplement (ASEC) of the Current Population Survey (CPS). Starting with 2008 SAHIE, we use American Community Survey health insurance estimates.
The CPS ASEC is the official source for national estimates of health insurance coverage. The CPS ASEC provides annual national and state-level estimates based on a sample of about 100,000 addresses. It asks about health insurance coverage in the previous calendar year. People are considered insured if they were covered by any type of health insurance coverage for part or all of the previous year, and they are considered uninsured if they were not covered by any type of health insurance for the entire year. People with no coverage other than access to Indian Health Service are also considered uninsured.
For more information about health insurance coverage see the health insurance main page.
Compared with other national surveys, the CPS ASEC estimate of the number of uninsured more closely approximates the number of uninsured at a specific point in time during the year than the number of uninsured for the entire year. For more details see "People with Health Insurance: A Comparison of Estimates from Two Surveys" [PDF – 68k] (Survey of Income and Program Participation Working Paper 243, June 2004).
The CPS ASEC universe includes the civilian noninstitutional population of the United States and members of the armed forces in the United States living off post or with their families on post. It excludes all other members of the armed forces and treats college students living in dormitories as residing in their parental homes. It does not include observations for most counties. Of the more than 3,100 counties in the United States, about 1,200 counties are in the sample. In the design, some counties represent a group of counties, while others represent only themselves. To use the data at the county-level we adjust the sample "weights" (the number of people represented by each sample person) so that each county is self representing.
We model a three year average of the CPS ASEC centered on the year of interest. For example, for the 2007 model we averaged estimates for 2006, 2007 and 2008 obtained from the 2007, 2008 and 2009 CPS ASECs. We used estimates reflecting the results of follow-up verification questions and implementation of Census 2000-based population controls. Beginning with the 2001 CPS ASEC, the estimates also reflect the implementation of a sample expansion that increased the number of responding households by 28,000 to about 78,000 households.
For more information about characteristics of the CPS and the ASEC see the CPS main page.