Parcel Return Service, DC

ZIP code 56908 is a special-use code associated with Washington, D.C., rather than a conventional neighborhood ZIP with clear geographic boundaries. As a result, public landmarks cannot reliably be assigned to the code itself. The best-known landmarks in the surrounding city include the White House, the U.S. Capitol, the National Mall, and the Smithsonian museums, but those are not necessarily within ZIP code 56908.