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1. 2008 U.S. 110th Congressional Districts

2008. U.S. 110th Congressional Districts represents the political boundaries for the U.S. 110th Congressional Districts. The membership is current as of ... Environmental Systems Research Institute (Redlands, Calif.).

2. 2009 U.S. 111th Congressional Districts

2009. U.S. 111th Congressional Districts represents the political boundaries for the U.S. 111th congressional districts. The membership is current as of ... Environmental Systems Research Institute (Redlands, Calif.).

3. 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.).

4. 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.).