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The National Map Corps


The National Map Corps volunteers are successfully editing structures in all 50 States, Puerto Rico, and the US Virgin Islands. Structures include schools, hospitals, post offices, police stations and other important public buildings.

Volunteers collect and/or improve structures data by adding new features, removing obsolete points, and correcting existing data using a web-based mapping tool. Both newly collected and modified point features become part of the USGS National Structures Database, The National Map, and ultimately U.S. Topo Maps. Volunteers include youth from various organizations such as 4-H and scouting, retirees, students, and anyone with an interest in contributing. Through their participation, volunteers are making significant contributions to the USGS's ability to provide the Nation with accurate mapping information.

It is easy to sign up and get started!! All you need is access to the internet, an email address, and a willingness to learn.

For more information about the project and how to participate, go to The National Map Corps editor at or the Project Homepage at
Also contact us at if you have questions or comments.
Get Started Now!
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Page Last Modified: Tuesday, 30-Jun-2015 10:50:30 EDT