Parcel Return Service, DC

ZIP code 56971 is a special-use postal code associated with Washington, D.C., rather than a conventional neighborhood ZIP with a clearly defined public boundary. For that reason, landmarks cannot reliably be assigned to the ZIP itself. Notable landmarks in Washington include the White House, U.S. Capitol, Washington Monument, Lincoln Memorial, and Smithsonian museums along the National Mall; these are city landmarks, not necessarily locations within 56971.