track usps usa allows customers to monitor the status and location of their shipments within the United States. USPS offers various tracking options for different types of mail, including First-Class, Priority, and Express Mail. To track a package, customers can enter the tracking number on the USPS website or use the USPS mobile app. This service provides real-time updates on the package’s journey, including its departure from the sender’s location, transit points, and final delivery.