2003. Unofficial Census blocks boundaries for the District of Columbia. These boundaries were compiled from an unofficial U.S. Census TIGER/line product...
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1930. This polygon layer represents the Census Tract (1930?) in Washington, DC 1930.
1930. This polygon layer represents the Census Tract (1940) in Washington, DC 1940.
1930. This polygon layer represents the Census Tract (1950) in Washington, DC 1950.
1930. This polygon layer represents the Census Tract (1960) in Washington, DC 1960.
1930. This polygon layer represents the Census Tract (1970) in Washington, DC 1970.
1930. This polygon layer represents the Census Tract (1980) in Washington, DC 1980.
1930. This polygon layer represents the Census Tract in Washington, DC 1990.
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...
2002. The polygon layer represents the location and attributes of Central Employment Area in Washington, DC 2002.