The District of Columbia Geographic Information System (DC GIS) is coordinated by the Office of the Chief Technology Officer (OCTO) and provides District agencies and the public a 'one-stop shop' for geospatial data and enterprise applications. As a technology, GIS empowers policymakers and implementers with data and application tools that support better decision-making and performance. Learn how GIS improves quality and lowers the cost of services provided by the DC Government by visiting the links below.
Learn more about the DC Geographic Information System (DC GIS) program or contact us by email.
Featured Geospatial Data, Tools and Services
The District offers several online mapping applications highlighting information from various fields of interest such as crime statistics, public school profiles, detailed property information and more.
Find over 400 data sets of District agency information made possible through partnerships with OCTO's GIS group and DC government agencies.
Learn how to make and retrieve on-line maps and data about Washington DC via web-services. Using these will save time, money and the uncertainty of having the most current data.
The MAR is a database of building addresses and other location identifiers in the District. Each address in the database has been assigned a unique Address Identification Number (AID), map coordinates and other useful information.
OCTO operates a data maintenance and enhancement program to keep data current and introduce new and valuable GIS layers to the District government and public.
DC published better and faster map services in version 10.2
DC GIS Steering Committee