Old Box Numbers

Take a good look at your incoming US mail.  Does it use old box number?  These numbers include PO Box 3333, 6666, 4-digit numerical box numbers (such as 1958, 2006, 2964), and numerical-alpha box numbers (like 1-A, 1502-A, 1603-A, 1604-A). These old box numbers have not been used by Yale for ten years, yet we continue to see a large volume of mail arriving daily with these old numbers.  If mail reaches your department with old box numbers or street addresses, please contact the senders immediately asking them to correct their database to show your correct post office box number (usually 6 digits) and zip code with add-on.  The campus mail office can supply you with Change of Address cards for this purpose. 

Because, over the years, the number sequence of these boxes has been assigned to other towns, it is very possible your mail will not even come into Yale University but will be returned to sender as insufficient address. Don't let this happen to your mail!