USPS Tracking Number Formats
USPS Tracking Most USPS tracking numbers are 22 numbers long, arranged in groups of four digits, such as 9400 1234 5678 9999 8765 00. The tracking numbers of USPS Express Mail are 13 characters long, begin with two letters, and end with “US”. USPS Tracking Number Formats: USPS tracking number Formats is usually a number … Read more
