Managing mailboxes or PO boxes in Puerto Rico

The best way to get a box is to locate the most convenient Post Office for you. Then go on line to USPS.com.  You can set up an account there and you can see what is available at your preferred office.  Order the box.  Print out the reciept and take it to the Post Office.  They will give you the keys.  The system will automatically bill you for the box every year.

I found that the local post office staff usually don't know what boxes are available.

@Cheryl

In my experience, transitioning and getting my mail was really seamless.  I have been using the post office PO Box for five years now, the only thing is the praised the price  from $100 per year to $200 per year.  I get all my mail.  Just a heads up, be sure to know the actual address of the post office for mail from alike fed ex, dhl etc because they can’t deliver to a PO Box and often times delivers late in the night. Ie the Aguadilla actual address is 50 Carr 459 (you would add your box number right after this) Aguadilla PR 00603.  Good luck