Street Addressing Service for your PO Box:For example, if a Post Office is located on 500 Main Street and you have PO Box 59, your mail would be addressed 500 Main Street #59. You will also be able to use the street address to receive most packages and deliveries through private carriers, such as UPS and FedEx.https://www.usps.com/pobox/customer-agreement-for-premium-po-box-service-enhancements.pdf