Hello friends! Major courier services like FedEx partner with USPS to deliver their packages, so you should know Where Is FedEx Tracking Number When Package Delivered Through USPS? As you know, FedEx tracking number is a 12-digit number and can extend up to 15-digits. It can be found in the barcode label which is attached in the package. It can also be found in the receipt of the package.
So in case you have ordered a package through FedEx and have received it through USPS mail, you should know where can you find the tracking number of your package. In this case, the FedEx tracking number is not there and there is a USPS tracking number. You can find your USPS tracking number, which is a 22-digit numeric code, in the mailing receipt of the package.