Thank you for your advice. I very much appreciate it. I found this on the USPS web site regarding PO Box owner address discolosure.
"Release of Address Information:
General. Information relating to boxholders, permanent and temporary change of address, and commercial mail receiving...
How can I get the physical address to serve my spouse who only uses a PO box # and is hiding from service?
What is the process? What forms do I use or request? We live in different cities in California.