USPS tracking
Track a USPS parcel
Enter your USPS tracking number to follow your item from acceptance to delivery. Below, we explain every status, the common reasons tracking stalls, and how businesses track USPS deliveries the moment they reach the building.
Track a USPS parcel
Enter your tracking number to see the parcel's journey.
About USPS
The United States Postal Service is the US government's postal operator, delivering an enormous volume of letters and parcels across every American address as well as vast international mail. Services such as Priority Mail, First-Class Package and Priority Mail Express carry it, and USPS is one of the most common carriers on US→UK and US→EU inbound parcels.
Most USPS parcels are tracked end to end, so you can follow an item from the moment it is accepted. International shipments hand over to the destination country's postal service for final delivery, which is where the tracking style can change part-way through the journey.
USPS tracking number formats
A domestic USPS tracking number is usually a long numeric string of 20 to 22 digits, often printed in groups of four. International items use the 13-character S10 format: two letters, nine digits, then US. You will find it on your Post Office receipt, the sender's dispatch email, or the parcel label.
USPS tracking statuses explained
- Pre-Shipment / Label CreatedThe sender has printed a label but USPS has not yet taken the item. There is nothing to move until it is accepted.
- AcceptedUSPS has the item - dropped at a Post Office, collected on a route, or picked up from the sender.
- In TransitThe parcel is moving between USPS facilities. Expect quiet gaps on long domestic hauls.
- Out for DeliveryThe item is with a carrier on the delivery route and should arrive that day.
- DeliveredHanded over at the address. For businesses this means reception or the mailroom received it - not yet the named recipient.
- Available for PickupHeld at a Post Office, usually after a missed delivery. Bring ID and the notice or reference.
- Alert / ExceptionSomething needs attention - a customs hold, an address issue, or a delay in the network.
USPS tracking FAQs
How do I track a USPS parcel?
Enter your USPS tracking number into the tracker above. Domestic numbers are usually 20–22 digits (like 9400 1000 0000 0000 0000 00); international items use a 13-character code ending in US, such as LX123456789US. You'll see each scan from acceptance to delivery.
What does a USPS tracking number look like?
Domestic numbers are commonly 20 to 22 digits, often printed in groups of four. International items follow the S10 standard: two letters, nine digits and the country code US - for example LX123456789US.
Why is my USPS tracking not updating?
Tracking pauses between scans - overnight in transit, during long domestic hauls, or while an international item clears customs. If there's been no scan for several days, ask the sender to open a case with USPS.
What does “delivered” mean at a business address?
For an office, campus or apartment block, “delivered” means USPS handed the parcel to reception or a mailroom - not to the named person. Internal tracking software like Traizr takes over from that point.
Can Traizr track USPS parcels automatically?
Traizr tracks parcels once they reach your building: staff scan each item in, the recipient is notified automatically, and a signature is captured on collection - a complete chain of custody from courier to recipient.
Common USPS tracking problems
Stuck “in transit”
Long gaps are normal on US domestic routes. Give it a day or two; if it stalls beyond the expected date, the sender can open a case with USPS.
Held at a Post Office
After a missed delivery the item shows “available for pickup”. Collect it with photo ID and the notice, or schedule redelivery.
Says delivered but not received
At a business, it's usually with reception or the mailroom. Check there first - this is exactly the internal gap Traizr closes.
Held in customs
International items can pause for customs clearance and duty. The status may sit on an exception for a while before moving again.
What happens after “Delivered”?
For a home address, delivery is the end of the story. For an office, university, hospital or apartment building, it's only halfway: the parcel has reached the door, but it still has to travel from reception to the person it's actually for. That internal leg is invisible to USPS - and it's where parcels most often go missing.
Traizr picks up exactly where the courier scan ends, giving your building the same visibility for the internal journey that USPS gives for the external one.
How Traizr tracks USPS deliveries inside your building
Most tracking stops at “Delivered”. Traizr continues the journey - from the front desk to the recipient's signature.
- CourierUSPS arrives
- ReceptionScanned in
- MailroomLogged & sorted
- NotificationRecipient alerted
- CollectionHanded over
- SignatureProof captured
- Audit trailFull history
Explore Traizr's features or see it applied to office mailrooms, universities and student accommodation.
Track other couriers
Never lose a USPS parcel in the building again
Traizr is internal mail & parcel tracking for reception teams and mailrooms - scan-in, instant recipient notifications, and a signature-backed audit trail for every item.
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