Office of the Chief Technology OfficerOverlay Districts are a zoning designation that modifies the basic underlying designation in some specific manner; this is what the Overlay polygons in the Zoning map represent. This layer contains complete theoretical address ranges. Overlay zoning modifies the standards of the base zoning within a defined geographic area. This retired dataset represents the boundaries of the overlay areas under the Zoning Regulations of 1958. ***Retired 9/27/2019***ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/a8813c4d05fe4edfa931517eeeebcd31_19engOpen Data DCPublicOverlay Zones 1958 [District of Columbia--Washington]Web servicesDistrict of Columbia--WashingtonDistrict of Columbia1958