This industry group comprises establishments primarily engaged in providing air, surface or combined courier delivery services. Courier establishments of the Post Office are included.

This industry group comprises establishments primarily engaged in providing messenger and delivery services of small parcels within a single urban area. Establishments engaged in the delivery of letters and documents, such as legal documents, often by bicycle or on foot; and the delivery of small parcels, such as take-out restaurant meals, alcoholic beverages and groceries, on a fee basis, usually by small truck or van, are included.