Maps & Apps
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.
The District's 2012 aerial photography was taken in April and June at a resolution of 30 centimeters (approximately 1 foot).