Work with interactive mapping tools from across the Census Bureau.
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.
Information about the U.S. Census Bureau.
Information about what we do at the U.S. Census Bureau.
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.
Find media toolkits, advisories, and all the latest Census news.
See what's coming up in releases and reports.
The cartographic boundary files are simplified representations of selected geographic areas from the Census Bureauís MAF/TIGER geographic database. These boundary files are specifically designed for small scale thematic mapping.
When possible generalization is performed with intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year.
To improve the appearance of shapes, areas are represented with fewer vertices than detailed TIGER/Line equivalents. Some small holes or discontiguous parts of areas are not included in generalized files.
Generalized boundary files are clipped to a simplified version of the U.S. outline. As a result, some off-shore areas may be excluded from the generalized files. This simplified U.S. outline is available for download for reference.
The 2013 cartographic boundary shapefiles are named cb_2013_ss_<entity>_rr.zip and the 2013 cartographic boundary KML files are named cb_2013_ss_<entity>_rr.kmz where:
For a list of entity names and their descriptions for the 2013 cartographic boundary files, please see our Entity Name Description [PDF] document.
The 2010 cartographic boundary files are named gz_2010_ss_lll_vv_rr.zip where:
For a complete list of summary level codes for the cartographic boundary files, please see our Summary Level Codes Page.
For the naming convention of cartographic boundary files created prior to 2010, please see our naming convention page for previous versions.
Files are available at target map scales of:
Geographic areas are not available at all target scales.
If the Cartographic Boundary files are not detailed enough to meet your needs, try one of our other types of