The United States Postal Service (USPS) is the backbone of mail delivery across the country, ensuring that letters, parcels, and packages reach their destinations. A crucial part of this logistics operation is USPS tracking—a system that lets senders and recipients monitor the journey of their mail in real-time. One of the most frequently asked questions by customers is about the number of digits in a USPS tracking number and how to identify it properly.
TLDR: USPS Tracking Number Length Summary
USPS tracking numbers typically contain 20 to 22 digits, though this may vary depending on the service used. For example, USPS Priority Mail and First-Class Mail usually generate a 22-digit number. Some international services may feature a combination of letters and numbers totaling 13 characters. Understanding the format can help users track their packages more effectively and avoid confusion.
What Is a USPS Tracking Number?
A USPS tracking number is a unique identifier assigned to every mailpiece or parcel that includes tracking. It allows postal customers to access information such as the package location, estimated delivery time, and any delivery delays.
This number is scanned at various postal points throughout the journey, providing real-time updates for better visibility and peace of mind.
How Many Digits Are in a USPS Tracking Number?
The number of digits in a USPS tracking number can vary depending on the service selected. Each service uses a different tracking format:
- Priority Mail® and First-Class™ packages: Typically a 22-digit number (e.g., 9400 1000 0000 0000 0000 00).
- Certified Mail®: Usually contains 20 digits.
- Express Mail® (now called Priority Mail Express®): Often includes a 13-character tracking number with two letters, followed by 9 digits, and ending in ‘US’ (e.g., EA 123456789 US).
- International Services: Also use 13-character alphanumeric codes (e.g., CJ 123456789 US).
Therefore, while the most common length is 20 to 22 digits, other services rely on alphanumeric combinations totaling 13 characters. Recognizing the format can also help determine whether the item is domestic or international.
Why It’s Important to Know the Tracking Number Format
Understanding the format and number of digits in a USPS tracking number can be extremely helpful for several reasons:
- Quick Identification: Knowing the format helps determine the service level and identify any potential tracking errors immediately.
- Fewer Errors When Entering: Miskeying even one digit or letter can return a failure when attempting to track your package. Knowing how long it’s supposed to be can help verify it’s entered correctly.
- Customer Support: When speaking to USPS representatives, providing the correct tracking number format ensures faster service assistance.
How to Locate Your USPS Tracking Number
Your USPS tracking number can be found in several different places depending on how the item was shipped:
- Email Confirmation: If you purchased postage online or from a retailer such as Amazon, your tracking number will appear on your confirmation email.
- Shipping Label: If you shipped from a USPS office, the tracking number is printed on your receipt and shipping label.
- USPS Online Account: If you used USPS.com to create the shipment, the number will be saved in your account under tracking history.
Once you have the number, you can input it into the USPS Tracking tool to follow the package’s journey from origin to destination.
Examples of USPS Tracking Number Formats
To help users become familiar with real examples, here are some commonly seen formats:
- 22-digit domestic tracking (Priority Mail): 9400 1000 0000 0000 0000 00
- 20-digit tracking (Certified Mail): 7012 3450 0001 2345 6789
- 13-character tracking (International & Express): EA123456789US, LN123456789CN
These examples showcase how USPS distinguishes between domestic and international shipments, with domestic typically being numeric-only and international including letters.
Service-Specific Tracking Number Breakdown
Here’s a quick breakdown of common USPS services and their tracking formats:
| Service | Format | Example |
|---|---|---|
| Priority Mail | 22 digits | 9400 1000 0000 0000 0000 00 |
| Certified Mail | 20 digits | 7012 3450 0001 2345 6789 |
| Express Mail | 13 digits (alphanumeric) | EA123456789US |
| First-Class Package | 22 digits | 9205 5000 0000 0000 0000 00 |
| International | 13 characters (alphanumeric) | CJ123456789US |
How to Track a USPS Package
Once you locate your USPS tracking number, tracking the package is quite simple:
- Go to the official USPS Tracking website.
- Enter your tracking number into the search box.
- Click on “Track” to view your package status.
The system will display the package’s travel history including acceptance, in-transit updates, and the final delivery notice.
Common Issues with USPS Tracking Numbers
There are scenarios where tracking numbers might not work correctly. Here are a few possible issues:
- Typographical Errors: One incorrect number or letter can lead to a tracking failure.
- Inactive Tracking: Sometimes tracking won’t activate immediately, especially if the package hasn’t been picked up yet.
- Expired Tracking: USPS retains tracking history for 120 days. Older numbers may become inactive.
Conclusion
Tracking numbers are an essential feature of USPS services, providing both sender and recipient with full visibility into the shipping journey. While the majority of tracking numbers contain between 20 and 22 digits, some services—especially international and express options—opt for an alphanumeric combination of 13 characters. Knowing what to look for can ensure smoother tracking and fewer delivery anxieties.
FAQs About USPS Tracking Numbers
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Q: Can a USPS tracking number have letters?
A: Yes. International and Express Mail numbers typically include letters (e.g., EA123456789US). -
Q: Is it possible to track my package without a tracking number?
A: Without the number, tracking is difficult, but you may be able to get assistance at your local post office or through your USPS account if the package was created online. -
Q: What should I do if my tracking number isn’t working?
A: Double-check for typographical errors and wait a few hours if it’s a new shipment. If it still doesn’t work, contact USPS support. -
Q: Do all USPS services come with a tracking number?
A: Most modern USPS services include tracking, though certain letter mail and lower-cost options may not. -
Q: How long is USPS tracking information stored?
A: USPS stores tracking logs for approximately 120
