Open daily 10 a.m. to 5:30 p.m.
Admission is always free!
2 Massachusetts Ave., N.E.
Washington, DC 20002
The museum's main entrance is located on the corner of First Street and Massachusetts Avenue NE. Other entrances have variable hours.
Furnishings put the 'office' in post offices. Many commonplace objects that are fundamental to any place of business can be found at the post office. Everything from pens to filing cabinets keep the post office running smoothly.