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1. 2010 U.S. Census Tracts

2010. U.S. Census Tracts represents the U.S. Census tracts of the United States in the 50 states, the District of Columbia, and Puerto Rico. Environmental Systems Research Institute (Redlands, Calif.).

2. 2010 U.S. County Boundaries

2010. U.S. County Boundaries represents the boundary lines of the counties of the United States. Environmental Systems Research Institute (Redlands, Calif.).

3. 2010 U.S. Telephone Area Code Boundaries

2010. U.S. Telephone Area Code Boundaries represents the telephone area codes for the United States. They are also known as Numbering Plan Areas (NPA). T... Environmental Systems Research Institute (Redlands, Calif.).