As one of the largest and most established independent office supply dealers in Chicagoland, we truly offer one stop shopping.  A superstore may carry about 15,000 items. We carry 55,000 items, an in depth offering of products in all categories. And with over 41 locations coast to coast, Chicago Office Products Co. can have your order delivered right to your door within a few business days. Thousands of office products are only a click away with our New ShopCOPCO Catalog , featuring live previews and instant, on-page ordering. We've also made finding the right item faster, with fewer clicks!