A USPS tracking number typically consists of 22 digits.
1. How many digits are in a USPS tracking number?
A USPS tracking number is typically 22 digits long.
2. Are there any letters in a USPS tracking number?
No, a USPS tracking number consists only of numbers.
3. Can a USPS tracking number be shorter or longer than 22 digits?
In some cases, a USPS tracking number may be shorter or longer than 22 digits, but the standard length is 22 digits.