What Does a PO Box Cost? You might have some questions if you are considering using a PO box. How much does a PO box cost? Is there a PO box near me? What size PO boxes are available? Can I get a refund if I don’t need it anymore? We’ll give you the answers to these questions and more to make renting a US post box a breeze. Getting a USPS post box is relatively straightforward. When making a change of address, getting a PO box can sometimes be an excellent solution. At times you don't have an actual