what does usps in transit mean refers to a package status indicating that the shipment is currently moving through the USPS network toward its final destination. This status appears after the initial acceptance scan and before final delivery. “In transit” updates can include arrival at or departure from sorting facilities, transportation between states, or customs processing for international shipments. While the package is on the move, the delivery timeline depends on the service level and potential delays. Tracking this status helps recipients estimate arrival and stay informed about their package’s journey.