Walgreens is a public corporation that is located in Deerfield, Illinois, and traded on the New York Stock Exchange. As the largest drugstore chain in the United States, Walgreens operates more than 8,200 locations and boasts more than $70 billion in annual sales every year. Walgreens also operates Walgreens.com, an online store where customers can purchase everything found in Walgreens stores and even get prescriptions refilled. The online inventory includes contact lenses, beauty and personal care products, over-the-counter medications, home health care products, sexual wellness products, groceries, household products and diet and fitness products. There is even a photo department for uploading pictures and having them printed at Walgreens store or produced and mailed to homes.