A USPS tracking number is a unique number linked to a package or trackable mailpiece. You enter it on the USPS tracking page to check latest scan, current location and delivery status. The number is often printed below the barcode on a mailing receipt or shipping label.
Finding it is usually simple but the location depends on whether you sent the package or you’re waiting to receive it. Senders should check their receipt or online shipping account. Recipients can look in the seller’s shipping email, order history or Informed Delivery dashboard.
What Is a USPS Tracking Number and What Does It Look Like?
A USPS tracking number helps identify one specific shipment as it moves through the postal system. USPS scans the barcode at different points such as when the package is accepted, processed, moved between facilities and delivered. Those scans create the updates you see online.
Most USPS tracking numbers contain a long series of digits. The exact length and starting numbers can vary based on the mail service used. Because of that, don’t rely only on the number of digits. Look for wording such as Tracking Number, USPS Tracking or printed number directly below the barcode.
A store order number isn’t the same thing. An order number belongs to the seller and helps manage your purchase. The USPS tracking number belongs to the shipment and is used to follow the package after it has been mailed.
Where to Find Your USPS Tracking Number
The best place to look depends on how the postage was purchased and whether you’re the sender or recipient.
| Situation | Where to Look | What to Identify |
|---|---|---|
| You mailed it at a Post Office | Printed sales receipt | A long number labeled as the tracking number |
| You printed postage online | Click-N-Ship or your USPS account | The shipping label record or order details |
| You bought from an online store | Shipping email or retailer account | The carrier tracking number, not the store order number |
| You have the package | Shipping label | The number printed below the barcode |
| You’re expecting a package | Informed Delivery dashboard | An incoming package listed with USPS tracking details |
Check the confirmation email carefully. Some sellers place the tracking number behind a button that says “Track Package” rather than showing the full number in the message. You may also find it under the shipped orders section of the retailer’s website or app.
How to Use the Number to Track a USPS Package
- Copy the full tracking number. Make sure you don’t leave out any digits or copy extra spaces. This is a common reason a valid number returns an error.
- Enter it into the official USPS tracking tool. Paste or type the number into the tracking field and submit it. The page should show the latest available scan, along with any expected delivery information USPS currently has.
- Read the newest update first. Tracking history is normally shown by date and time. A package may stay on the same update for a while between scans, especially when it’s moving between processing centers. Tracking shows recorded activity but it doesn’t make the shipment move faster or guarantee an exact delivery time.
What to Do If You Cannot Find the Number or It Does Not Work
If you lost the receipt: Check your email, USPS account, Click-N-Ship history, marketplace account or any saved photo of the label. USPS staff generally can’t recover a lost tracking number simply by searching your name or address.
If you’re the recipient: Ask the sender or seller for the USPS tracking number. They may have created the label but forgotten to send the shipping confirmation.
If the number shows no results: Check for typing mistakes first. A newly created label may also need time before the first USPS scan appears. This often happens when a seller prints a label before handing the package to USPS.
If no tracking number exists: Not every piece of mail includes tracking. Regular postcards and some letters may be sent without a trackable service. In that case, there may be no online status to check.
Frequently Asked Questions
Where is the tracking number on a USPS receipt?
It is usually printed near the bottom of the receipt and may appear below the service details. Look for a long number labeled as USPS Tracking or Tracking Number.
Is a USPS order number the same as a tracking number?
No. An order number identifies a purchase or postage transaction. A tracking number identifies the physical shipment and lets you view its mailing and delivery updates.
Do all USPS mailpieces have tracking numbers?
No. Many package services include tracking but regular letters, flats and postcards may not. Tracking may require an eligible mail service or an added service when the item is mailed.
Final Thoughts
Your USPS tracking number is usually on the mailing receipt, shipping label, confirmation email or online order page. Look below the barcode and make sure you copy the full number. Saving a photo of the receipt or label can prevent a lot of trouble later.
Where did you finally find your tracking number – on the receipt, in an email or inside your order account? Share it in the comments so other readers know where to check first.