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