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Census Tracts in 1970

Published by D.C. Office of the Chief Technology Officer | District of Columbia | Catalog Last Checked: May 05, 2026 at 10:36 PM | Dataset Last Updated: January 05, 2018 at 12:00 AM
Census Year 1970 Census Tracts. The dataset contains polygons representing CY 1970 census tracts, created as part of the D.C. Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. Census tracts were identified from maps provided by the U.S. Census Bureau and the D.C. Office of Planning. The tract polygons were created by selecting street arcs from the WGIS planimetric street centerlines. Where necessary, polygons were also heads-up digitized from 1995/1999 orthophotographs.

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