You can use the occupant address format to mail to a rural route and box number, specific street number, or box office without using the addressee's name.

Example:

Postal Customer
1234 Maine St.
Anytown, US 12345-5789

In place of Postal Customer, you may use also use "Occupant", "Householder", or "Resident".

Any variation of these approved naming conventions may result in mail being returned to you by the United States Postal Service.