6. Census Year 2000 Tract Polygons. This dataset contains polygon features, created as part of the DC Geographic Information System (DC GIS) for the D...
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2002. This polygon dataset represents the Enterprise Zone in Washington, DC 2002.
2006. This dataset represents the Metro station boundaries in Arlington, VA 2006.
168. This polygon layer represents 1990 Census Neighborhood Service Areas (NSA) boundaries. Facilitates linking the block, block group, tract and NSA re...