| How big is the delivery industry? For a clue, take a look at the U.S. Postal Service. Last year the Postal Service: |  | Delivered 200 billion pieces of mail. |  | Employed over 700,000 people. |  | Paid billion in wages/benefits. | |  | billion in sales. |  | billion in profit. |  | 2nd largest U.S. employer. | |