usps parcel number tracking is the process of monitoring a shipment using the unique tracking number provided by the United States Postal Service. This number allows senders and recipients to check the package’s current status, transit history, and estimated delivery time. USPS tracking updates include stages like “Accepted,” “In Transit,” “Out for Delivery,” and “Delivered.” The tracking number is typically printed on the receipt, shipping label, or in the confirmation email. Parcel tracking improves transparency, reduces customer inquiries, and helps resolve issues such as delays or misdeliveries. It’s an essential feature for both casual shippers and businesses managing high-volume logistics.