Guidance for Developers
Census Data API User Guide
This user guide is to instruct developers and researchers on how to use the Census Data Application Programming Interface (API) to request data from U.S. Census Bureau datasets.
Census Microdata API User Guide
This guide is to provide an overview of the U.S. Census Bureau’s microdata application programming interface (API) and walk through how to make queries. Through this guide, you will learn what the microdata API is, when to use it, and how to use it to get raw data and custom statistics.
Census Data API Discovery Tool
The Census Data API Discovery Tool provides a machine-readable dataset discovery service.
More Information
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Discover Census Bureau Statistical and Research Code on GitHub.comThe U.S. Census Bureau's official GitHub page, operating under the banner of Open Census.
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How-to Materials for Using the Census APIDo you have questions on how to use the Census API? Check out our step-by-step guidance to learn how to use the Census API to find the data you need.
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How-to Materials for Using the Microdata AccessDo you have questions on how to use Microdata Access? Check out our step-by-step guidance to learn how to use Microdata Access to create your own tabulations.
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Video TutorialsOur team has created a series of "how-to" videos for those looking for ways to enhance their knowledge of data.census.gov, Census API, and Microdata Access.
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WebinarsDid you miss our latest webinar? Would you like to watch it again? View our latest recorded webinars on data.census.gov, the Census API, and Microdata Access.
Page Last Revised - August 5, 2025