Open Friday through Tuesday,
10:00 a.m. – 5:30 p.m.
(Closed Wednesdays & Thursdays until further notice, & closed December 25. Policies and requirements are subject to change without notice.)
Admission is always free!
2 Massachusetts Ave., N.E.
Washington, DC 20002
The only mail canceled on the inaugural trip of any highway route was philatelic mail.
Highway Post Office First Trip cover- Aberdeen, South Dakota to Baker, Montana
Highway Post Office First Trip cover- between Amarillo, Texas and Roswell, New Mexico
Motorized Highway Post Office Service cover- Harrisonburg, VA to Washington, DC
Highway Post Office First Trip cover- between Louisville, KY and St. Louis, MO