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USDA ERS GIS Map Services and API User Guide

Published by Economic Research Service, Department of Agriculture | Department of Agriculture | Metadata Last Checked: January 27, 2026 | Last Modified: 2019-08-20
All of the ERS mapping applications, such as the Food Environment Atlas and the Food Access Research Atlas, use map services developed and hosted by ERS as the source for their map content. These map services are open and freely available for use outside of the ERS map applications. Developers can include ERS maps in applications through the use of the map service REST API, and desktop GIS users can use the maps by connecting to the map server directly.

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