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1. United States Counties, 2010-2013

2010. TomTom North America, Inc. and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the counties of the United States in the 50 states, the District of Columbia, and Puerto Rico at 1:100,000 scale.... Environmental Systems Research Institute (Redlands, Calif.).

2. U.S. States, 2007-2013

2010. TomTom North America, Inc. and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the 50 states, the District of Columbia, and Puerto Rico of the United States at 1:100,000 scale.This layer also ... Environmental Systems Research Institute (Redlands, Calif.).

3. U.S. ZIP Code Points

2014. Environmental Systems Research Institute (Redlands, Calif.) and TomTom North America, Inc. This polygon shapefile represents the five-digit U.S. ZIP Code areas as points, plus all ZIP Codes that have no associated area such as a building.... Environmental Systems Research Institute (Redlands, Calif.).