Arrival at Unit. Indicates the mailpiece was scanned at the final postal unit where delivery of the mailpiece will occur.

Does Unit mean PO box?

Street Addressing will have the same street address of the post office, plus a "unit number" that matches the P.O. Box number. As an example, in El Centro, California, the post office is located at 1598 Main Street.

Whats a USPS unit?

A Contract Postal Unit (CPU) is a supplier-owned or supplier-leased site operated by the supplier, under contract to the Postal Service™ to provide postal products and services to the public at U.S. Postal Service prices. Services provided at a CPU Partner/Supplier location are listed below: Stamps. Stamped Envelopes.