2010, 2011, 2012, and 2013. U.S. Census Bureau. Geography Division and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the 2010 Census urban areas in the United States. An urban area comprises a densely settled core of census tracts... Environmental Systems Research Institute (Redlands, Calif.).
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2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the unified school district boundaries in Alaska. School districts are geographic entities within which state, co... U.S. Census Bureau. Geography Division.
2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the unified school district boundaries in Hawaii. School districts are geographic entities within which state, co... U.S. Census Bureau. Geography Division.
2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the unified school district boundaries in Texas. School districts are geographic entities within which state, cou... U.S. Census Bureau. Geography Division.
2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the unified school district boundaries in California. School districts are geographic entities within which state... U.S. Census Bureau. Geography Division.
2007. U.S. Census Bureau. Geography Division and United States. Department of Commerce. This polygon shapefile contains state boundaries for the Northeastern United States The TIGER/Line Files are shapefiles and related database files ... United States. National Ocean Service.
2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the elementary school district boundaries in Texas. School districts are geographic entities within which state, ... U.S. Census Bureau. Geography Division.
2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the elementary school district boundaries in California. School districts are geographic entities within which st... U.S. Census Bureau. Geography Division.
2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the 2000 U.S. Census secondary school district boundaries in California. Secondary school districts provide educa... U.S. Census Bureau. Geography Division.
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2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the unified school district boundaries in Montana. School districts are geographic entities within which state, c... U.S. Census Bureau. Geography Division.