Learning how to get a PO Box™ involves visiting your local Post Office™ or renting one online, considering your mailbox needs, and then selecting the right size. If you’re moving out of your old home before your new one is ready, or if you’ll be staying in temporary places between moves, you can forward your mail to a USPS® PO Box. A PO Box is also an excellent option if you’re moving to a place where you need a more secure mailbox solution to prevent theft or tampering.