Parcel Return Service, DC

ZIP code 56998 is located in Washington, D.C. This area is most notably home to the United States Postal Service headquarters and the National Postal Museum. The ZIP code encompasses the vibrant neighborhoods of Capitol Hill and NoMa, offering a mix of historic landmarks and modern developments. With easy access to Union Station and the U.S. Capitol, ZIP code 56998 is a bustling hub of activity and history in the nation's capital.