Correct Address

For accurate mail delivery, the address must be complete, legible and formatted correctly. Use the department P. O. Box for the return address. The P. O. Box number should always be directly above the town, as the US Postal Service requests, so that their sorting machines are able to read it. 

Please use the following format when sending mail to/from Yale University:

Sending Via U. S. Mail:

  • Sender’s Name
  • PO Box 000000
  • New Haven, CT 06520- _ _ _ _
  • Recipient’s Name
  • Department Name
  • Yale University
  • PO Box 000000
  • New Haven, CT 06520- XXXX

Sending Via Campus Mail:

Interoffice Envelope

To insure delivery:

  • Recipient’s Name
  • Department Name
  • Building and/or Street Address

To insure prompt delivery, please include department name. If you are unsure of the correct campus address, please check Online Phonebook.

Incoming Mail and Packages – Proper Addressing 

Use your P. O. Box for all first class mail, both letters and packages. Use your street address when an item is being sent to you by private carrier such as United Parcel Service or Federal Express. If you have any questions, please call Yale Campus Mail at 203-436-4592 or email

Incorrectly Addressed Mail – Alerting the Department and Avoiding Delays

Often first class mail is improperly addressed. To correct this and avoid delays, Campus Mail attaches a green sticker to the mail. It reads:

Avoid Delayed or Lost Mail

  • Do not use a street address.
  • Your correct address is:
  • PO Box _ _ _ _ _ _
  • New Haven, CT 06520- _ _ _ _

When you find a green or yellow sticker on your mail, take a moment to contact the sender asking to have your address information updated.