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.
The Census Bureau has several tools to help you identify geographic boundary changes.
TIGER/Line shapefiles allow you to select a specific geographic area and vintage. You can overlay two different vintages within the GIS environment to visually or spatially detect any boundary changes between years. While shapefiles are the most flexible and comprehensive resource available, they are recommended only for experienced users of GIS software.
Boundary and Annexation Survey Maps
The Census Bureau conducts the Boundary and Annexation Survey (BAS) annually to collect information about selected legally defined geographic areas. The BAS is used to update information about the legal boundaries and names of all governmental units in the United States. These legally defined geographic areas include counties and equivalent areas, minor civil divisions, incorporated places, American Indian reservations and American Indian off-reservation trust lands.
BAS publishes entity-based PDF maps of updated legal boundaries. BAS maps are only available for the current and previous BAS year. The 2012 and 2013 BAS maps are currently available. The BAS maps display the updated legal boundaries and names valid thru January 1, for all governmental units that participated in that year's BAS. For example, the 2012 BAS maps display the updated legal boundaries and names valid thru January 1, 2011, for all governmental units that participated in the 2011 BAS. These legal entities include counties or county equivalents, minor civil divisions (MCDs; county subdivisions that are legal areas in 29 states), places, consolidated cities, American Indian areas/Alaska Native areas (AIAs) and Hawaiian Home Lands (HHLs).
American FactFinder Online Mapping
American FactFinder (AFF) has an internet mapping application. To compare boundary vintages on AFF, click Geographies on the left navigation. An overlay window will appear. Select the desired geographic area by using the name search or filter options in the left navigation. Next click on the Map tab in the Geography overlay. The map will display the latest boundary vintage in yellow. To make comparisons, select a different boundary vintage using the Boundaries and Features tab on the left.
The Boundaries and Features tab allows you to select geographic vintages by using the dropdown box labeled Display Boundaries and Features from. Some boundaries are only available in certain vintage years. For example, census block groups are found in the 2012, 2011, 2010 and 2000 boundary vintages, but do not appear in the other vintage years. Places can be selected from each boundary vintage, because incorporated places do have the potential to change each year. AFF is missing vintages for 2001 and 2003.
Geographic Boundary Change Notes
The Geographic Boundary Change Notes provide a list of changes to incorporated places, census designated places, consolidated cities, county subdivisions, counties and equivalent areas, and American Indian, Alaska Native, and Native Hawaiian areas.
Types of changes found on this website include:
The Geographic Boundary Change Notes only include boundary change information for existing legal areas that resulted in changes to hierarchical relationships with other geographic areas, and do not include information on all annexations. For example, if an incorporated place annexes unincorporated territory within the same county, then a change note is not recorded. However, if an incorporated place annexes unincorporated territory in a neighboring county, then a change note is recorded for the first annexation that resulted in a relationship change. Any additional annexations into the neighboring county will not be recorded, because the geographic area relationship is not changing as a result of the subsequent annexations.
The Geographic Boundary Change Notes are not recommended for identifying annexations for legal areas. The change notes do not include comprehensive information about 2010 Census changes to census designated places (CDPs). We recommend visiting the Geographic Comparability File - 2010 to 2000 Places to understand changes affecting 2010 CDPs.