USPS tracking
USPS is the United States postal operator and the final-mile carrier for most inbound international mail arriving in the US, including parcels handed over by China Post and Cainiao.
Tracking number format
20 to 22 digits, or UPU format ending in US
9400111899223197428490 · LZ123456789US
Domestic numbers are long and purely numeric. A number starting 94 is usually Priority Mail; 92 is often Parcel Select.
How long does delivery take?
2-8 days domestically
International parcels only enter USPS tracking once they clear US customs, which is why an item can appear stuck abroad for days and then suddenly show a US scan.
Things that look wrong but usually are not
- "Arriving Late" is a generic delay flag, not evidence that the parcel is lost.
- Weekend scanning is sparse, so silence from Friday to Monday is normal.
Also known as
United States Postal Service · Priority Mail · Parcel Select
Marketplaces that ship with USPS
If you ordered from one of these, your parcel may well be travelling with USPS even though the seller never said so.
Frequently asked questions
- What does a USPS tracking number look like?
- 20 to 22 digits, or UPU format ending in US. Domestic numbers are long and purely numeric. A number starting 94 is usually Priority Mail; 92 is often Parcel Select.
- How long does USPS take to deliver?
- 2-8 days domestically. International parcels only enter USPS tracking once they clear US customs, which is why an item can appear stuck abroad for days and then suddenly show a US scan.
- Why has my USPS tracking not updated?
- Parcels are only scanned at fixed points along the route, and on economy services those points can be days apart. Silence of up to two weeks during international transit is normal. See what tracking silence means for how long is too long.
- Can I track a USPS parcel without an account?
- Yes. Paste the number in the box above. Trackuo needs no account and stores nothing about you beyond the parcel itself.