Where can I get PO Box for sending email?

Hi, I use Mailchimp for my email marketing, but when I try to set up my account the system asks for a physical address, I don't want to use my real address. So how can I get a physical address in the US? Do I need to rent Virtual PO Box? Please Help.

Thank you.

You can do that but its very long process they dont easily activate your PO.Box account it has paper work. "postscanmail"

Good luck.