Yes, your 911 address is the same as your mailing address unless you have a post office box. Even if you have a post office box, it is still important that your 911 address is associated with the post office box. This can be done by filling out a form at your local post office. A mailing address is where the mail is delivered, such as a PO box or mailbox service. A mailing address, or postal address, is often regulated by postal authorities that are commonly associated with sending and receiving mail services. For example, in the US, this would be USPS.