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The UDS Mapper is free to use and open to the public

Tutorials & Resources

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Webinars & Presentations

Attending a webinar or in-person presentation is one of the best ways to learn how to properly and effectively use the UDS Mapper. View our list of upcoming webinars and presentations, and sign up for one today!

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A variety of how-to materials are provided to help you use the UDS Mapper, including a user guide, videos, animated presentations, and more! Use these resources to teach yourself how to use the UDS Mapper at your own pace.

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Knowledge Base

The Knowledge Base contains FAQs, a Glossary of terms used within the website, and Data Definitions. Type a key word or phrase into the search bar to find related articles. If you cannot find what you are looking for, feel free to contact us!

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Data Sources and Definitions

Data sources and definitions are provided for each dataset reported within the UDS Mapper. You can also read an explanation of our methodology for obtaining ZCTA-level data estimates.

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Definitions are provided for words used within the UDS Mapper website. You can also use the Knowledge Base to search for a particular glossary item by key word.

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Frequently Asked Questions (FAQs)

See answers to commonly asked questions about the UDS Mapper. You can also use the Knowledge Base to search for more information by key word or use the Contact Us form

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ZIP Code to ZCTA Crosswalk

ZIP Codes and ZCTAs do not always perfectly align. To find out which ZCTA a given ZIP Code has been assigned to, please use this Crosswalk.

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Download State/County Data by ZCTA Approximation

Use this tool to quickly download UDS Mapper data for all of the ZCTAs that have any part within a selected state, county or group of counties. Please note that these data are still reported by ZCTA, and in most cases do not exactly correspond to State/County boundaries.

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Articles & References

Want to learn more about the scientific background and significance of the UDS Mapper? View our list of relevant articles and references on community health centers and using GIS to improve community health.

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Maps of the Uninsured

Maps of the Uninsured in Comparison to Health Center Service Areas by State