in transit usps tracking refers to the status of a package that is on its way to the destination but has not yet been delivered. USPS tracking updates provide customers with real-time information about their shipments, including when the package is in transit, estimated delivery times, and any delays or exceptions. The “In Transit” status indicates that the package is moving through the USPS network but has not yet reached the final delivery point. Customers can track their packages online using the tracking number provided at the time of shipment.