A growing number of online mapping tools provide easy access to many kinds of information about the District of Columbia. Some have been developed by our own staff to help answer specific sorts of questions, others are general-purpose tools provided by the Office of the Chief Technology Officer (OCTO), and still more are popular commercial products. This is by no means a comprehensive list, but highlights some of the sites we use in our own work.
A product of the DC Office of Planning. The best tool for understanding which DC sites are historic. Also handy for sourcing everything from Ward, ANC, SMD, property tax information, Census tract information, and Google StreetView imagery. Note: The current version relies on Adobe Flash. A mobile-friendly edition is coming soon.
An interactive Ward map that works on mobile devices. Note that Ward maps are also available in Adobe PDF format here.
A central repository of maps and data provided by the Office of the Chief Technology Officer (OCTO)
A variety of tools for viewing spatial information for DC
Provided by the DC Office of Zoning.
OP also maintains a library of maps in Adobe PDF format
For information about requesting additional maps, please refer to mapping services describing OP's mapping services