Individual centres are responsible for sorting mail in a given region, typically within a radius of about 320 kilometres or 200 miles. Whether you have had your shipment picked or dropped a package off, you can use this tool to follow the status of your shipment.ДЄll mail collected by the US Mail Service are sorted through over 250 Processing and Distribution Centers located across the United States. US Mail Service says no tracking information available? If there is no status available or the information has not changed since the last time you viewed it, check back regularly as information is updated periodically throughout the day. Tracking your US Mail Service shipment is easy, just use your shipment reference number located in your shipment confirmation email, or in online store order page, that looks like 940****, 927***, 937***, 420***, Lx000000000CN and enter it into the tracking field above. To track your shipment, please enter your US Mail Service tracking number into the field above. Different services have different types of tracking numbers. The number of digits may vary depending on the service you are using. US Mail Service tracking number is usually a 22-digit number.

It is also known as label or article number. Whenever you post a package, the post office workers assign a number to that order, that number is called US Mail Service Tracking Number.

Tracking a certified mail receipt