how late does usps deliver on saturday

USPS delivers on Saturdays with regular deliveries typically occurring between 9:00 AM and 5:00 PM. However, during busy periods, deliveries may extend to 6:00 PM or later. Some Amazon packages may be delivered as late as 8:00 PM to 10:00 PM on Saturdays due to a special contract. In general, most USPS deliveries on Saturday are completed by 5:00 PM. Exact delivery times can vary based on location, mail volume, and other factors like weather or traffic conditions. Priority Mail and Priority Mail Express items receive priority for Saturday delivery, with Priority Mail Express allowing customers to select Saturday delivery specifically without extra cost. There are no additional fees for standard Saturday delivery services.