An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
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We use Partnership Shapefiles in the Boundary and Annexation Survey (BAS) to share data with and collect data from our partners. Shapefiles are GIS mapping files that contain geographical information, which are spatial data encoded into a file format.
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