Inter-D sorts and distributes mail and materials throughout the city. Madison is divided into four delivery zones of which three are the responsibility of Mail Services and the fourth is the University of Wisconsin-Madison. The state and university systems interface for the transfer of mail and materials between the two entities.
Some systems run on a limited basis so please call the number listed below with delivery questions.
The delivery time for Inter-D mail is greatly influenced by the accuracy of the address information provided. In fact, the number one impediment to timely delivery is inadequate address information. Every item transferred through the system should contain department name, building name or street address, floor or room number and recipient's full name. Please note that all Inter-D transfers are sorted and delivered by location and not recipient's name. An individual's name name is only used within the exact delivery location.