USPS Tracking
The United States Postal Service — domestic and international mail.
About USPS
USPS is the United States' government postal operator, legally obligated to serve every US address — handling everything from First-Class Mail to Priority Mail Express and international shipments. Its tracking numbers are issued per service class, and scans appear at acceptance, processing, departure, and delivery, typically updating about once every 24 hours.
USPS tracking number format
Most USPS numbers are 22 digits starting with 94, 92, 93, or 95 (Priority Mail commonly starts 9400 or 9205). International items use the 13-character UPU format ending in US — the first letter signals the service: E = Express, R = Registered, C = parcel, L = letter-post.
| Format example |
|---|
9400 1000 0000 0000 0000 00 |
EA 000 000 000 US |
92 0000 0000 0000 0000 0000 00 |
These are the most common patterns — carriers use multiple formats by service. Unsure? Paste your number above and we'll detect the carrier for you.
How to track a USPS package
- 01
Find your USPS number
It's on your order confirmation or shipping email. USPS numbers look like 9400 1000 0000 0000 0000 00.
- 02
Paste it above
Drop the number into the box — we'll recognise it as USPS automatically.
- 03
Track in one timeline
See every scan from origin to delivery, plus an estimated arrival window.
- 04
Get delivery alerts
Opt into email or push notifications and we'll watch it until it arrives.
USPS estimated delivery times
| Service | Typical delivery time |
|---|---|
| Priority Mail Express | Overnight–2 days (6 PM guarantee) |
| Priority Mail | 1–3 business days |
| Ground Advantage | 2–8 business days |
| Retail Ground | 2–8 business days |
| International (Priority/First-Class) | 6–20 business days |
Windows are typical, not guaranteed — customs, weather, and peak season can stretch them.
Common USPS tracking statuses & what they mean
- “In Transit to Next Facility — Arriving Late”
- The parcel missed its expected window but is still moving. USPS is the only major US carrier that flags lateness explicitly.
- “Shipment Received, Package Acceptance Pending”
- USPS has the sender's manifest but hasn't individually scanned your parcel yet — common with bulk shipper drop-offs.
- “Available for Pickup”
- The item is waiting at your local Post Office; bring ID to collect it.
USPS customer service
You can reach USPS customer care at 1-800-275-8777 (1-800-ASK-USPS) or track on the official site at tools.usps.com. For “where is my package?” questions, the timeline above usually answers faster than the phone queue.
USPS tracking FAQ
USPS scans at fixed checkpoints and typically refreshes about once a day, so a package can move for a day or two between scans. If there is no movement for 5+ days, the parcel may be delayed in processing; after 7 days you can file a Missing Mail search with USPS.
Usually 22 digits starting with 94, 92, or 93 (e.g. 9400 1000 0000 0000 0000 00). International shipments use 13 characters like EA123456789US. Certified and Registered Mail also use the 22-digit format.
USPS flagged the shipment as running behind its expected delivery window. The package is still moving; the estimate has simply slipped.
1-800-275-8777 (1-800-ASK-USPS). For tracking, it's faster to paste your number above — you'll see every scan without waiting on hold.