Parcel Return Service, DC

ZIP code 56980 is a unique-use Washington, D.C., ZIP code rather than a conventional neighborhood postal area. It does not define a public geographic area, so major landmarks cannot reliably be identified as located within it. The White House, U.S. Capitol, National Mall, and Smithsonian museums are prominent landmarks in Washington, D.C., but they should not be attributed to ZIP code 56980 without address-level confirmation.