The post office occupied half of the ground floor of the building. The lobby was separated from the mail room by a series of oak panels. The panels were fabricated by Federal Equipment Company of New York, New York and Carlisle Pennsylvania. A standard practice of the time, the prefabricated panels were selected from a catalog by the postmasters so that they could design a post office that fit their local need for space and customer services. The panels, roughly the size of a door, were then assembled on site by the postmaster.
Panels selected for Dillsburg included a "General Delivery" window, a "Registry" mail window, and a "Mail Order" window. The post office door was marked "Postmaster". Also included in the post office was a section for 108 rental lock boxes so customers could get their mail even if the windows were closed.
This post office remained in operation until 1971. Thanks to local residents and representatives of the American History Museum the interior panels were dismantled and relocated to the Smithsonian's American History Museum. In 1993 it was moved to the National Postal Museum at 2 Massachusetts Avenue, Washington DC.The current Dillsburg post office has been in operation since 1971.
It is located at 28 North Baltimore Street.
