Can you use the Post Office street address with a suite number instead of a PO Box number?

Often times, you can. Mail to a street address is sometimes redirected to the PO Box (if one exists) anyway. For example, Disneyland in Anaheim (CA) actually has a real-life street address, but all the mail goes to their PO Box; it would be impossible for the mailman to even attempt delivering the volume of mail that this theme park receives per day.

I think you are asking if you can used the physical street address of the Post Office with your box number listed as a suite number? So instead of the standard address like PO Box XXX you would use something like: 1000 Main Street, Suite XXX?If so, I have the same question! Some services won't take a PO Box but all my mail goes there.