Each faculty and staff member's four-digit number can be found on the second line of the printed phone directory or after the ZIP Code in the online directory. The four-digit number is virtually all that's needed to get mail to the correct building mail delivery point, Ziebold said. However, a campus address that includes a building and room number is a good back-up. The room number, where available, can be very important for delivery within the building. On both campus and U.S. mail, it is important to specify the building whenever the four-digit code isn't used, Ziebold added.
Some departments span more than one building on campus.