Mail Delivery services is the oldest department and the reason Linn Star Transfer, Inc. (LST) exists today. In 1986 LST was incorporated in LINN County, IA. It began with three trucks and six employees and its sole business was the US Postal Service STAR Route contracts. These facts are the basis for the company name Linn Star Transfer, Inc.

A Star Route is a mail route done by a private contractor to move mail from large city post offices to rural post offices. Today some 13,000 men and women contract to maintain Star Routes in all 50 states, carrying out highway transportation of the mail, in all types of vehicles from small trucks, to large tractor-trailers, and supplementing rural carriers at a great savings to the Postal Service and the public.