Open daily 10 a.m. to 5:30 p.m.
(Closed December 25)
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.
Get excited for our upcoming exhibition "Baseball: America's Home Run" with this fun hidden image game!
Test your knowledge of postal history and stamp collecting.
Could You be a RPO (Railroad Post Office) Clerk?
Envelopes have a special code that the U.S. Postal Service uses to help deliver the mail. See if you can figure out how to crack the code.
Do you know how stamp designs are chosen, or which transportation method replaced dog sleds in Alaska? Test yourself by answering these and other postal and philatelic questions.
Philatelic history quiz