“In transit” for USPS (United States Postal Service) carries a similar meaning to that in other logistics and postal services like FedEx. It indicates that your package is on the move and is being transported to its final delivery destination.
This status is used when the item has been processed through and left a USPS sorting facility, is en route to another facility, or is being delivered to your address.
he “in transit” status is updated as the package reaches different stages in its journey, including when it arrives at and departs from various distribution centers and post offices on its way to you.
It essentially means that your package is actively traveling within the USPS network toward its delivery location.