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.
If the coordinates of point(s) of interest are already available, this step can be skipped. If not, the first step is to retrieve the coordinates of the geographic center of any standard area (any area available from the Pick Geography tab). This is done by performing the following steps. First, click the Pick Geography tab and select area(s) of interest. Next, click the Simple Variables tab and then expand the Geographic Identifiers folder by clicking the + sign to the left. Select the variables Internal Point (Latitude) and Internal Point (Longitude). Generate file or report output from the Output tab.
Use the output report to copy and paste the latitude and longitude into the dialog box that appears after choosing "Add Radii". Below is an example of an output report.
Click the Pick Geography tab and then the File button. Next, select "Add Radii"
Enter the coordinates (internal points) for one point in the "Create a Point" window as shown below.
Enter desired radii.
The nonstandard area(s) just created will be added to the Pick Geography menu. Summary data for these area(s) can now be retrieved.
The smallest unit of standard geography available (see below) is used to generate data for each radius. The accuracy of data generated for a radius tends to increase as the standard unit of geography used becomes smaller. Accuracy also increases as the radius becomes longer. Data generated for a small radius (e.g. one mile) by using any data set other than Summary File 1, usually produces the most inaccurate estimates.
|Data Set||Smallest geographic unit|
|Summary File 1||block|
|Summary File 2||census tract|
|Summary File 3||block group|
|Summary File 4||census tract|
|Summary File 1 National File||census tract|
|Summary File 3 National File||census tract|