usps in transit refers to a package that is currently on its way to its destination but has not yet been delivered. When a USPS package is marked as “in transit,” it means that it is moving through the mail system and has not yet reached the final delivery stage. Customers can track their “in transit” packages using the USPS tracking system to receive updates on the package’s status, including its current location and estimated delivery date. “In transit” is a common status for packages that are still on their way to the recipient.