USGS Small-scale Dataset - 1:1,000,000-Scale National Boundaries of the United States 201403 Shapefile
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
US
beta
Summary
Description
This map layer portrays the boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer was created by extracting county polygon features from the 2006 Census TIGER/Line files produced by the U.S. Census Bureau. These files were then merged into a single file and the county and State boundaries were dissolved, leaving the national boundary. This is a revised version of the July 2012 map layer.