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Walgreen Co.
Type	Public (NYSE: WAG)
Founded	1901
Headquarters	Deerfield, Illinois
Key people	Jeff Rein, Chairman and CEO Greg Wasson, President and COO
Products	Retail - Pharmacy - Photo
Revenue	▲47.41 billion USD(2007)
Website	www.walgreens.com

Walgreen Co. (NYSE: WAG), d/b/a Walgreens (without an apostrophe), is a leading pharmacy chain, mail service, and pharmacy benefit manager, with specialty pharmacy operations in 49 states, the District of Columbia and Puerto Rico, with 6,237 locations (as of February 29, 2008). Walgreens is one of the two largest drug store chains in the United States.^[1] Walgreens states that it serves 5 million customers per day, filled 583 million prescriptions in fiscal 2007, and expects to have 7,000 stores by 2010.^[2] Walgreens was founded in Chicago, Illinois, in 1901 and has since expanded throughout the United States. Its headquarters is located in Deerfield, Illinois.

A typical Walgreens store is about 14,500 square feet (1,350 m²) with 11,000 square feet (1,000 m²) of sales area. They offer nearly 25,000 items for sale and typically staff between 25 and 30 people per store. On average, one store pulls in $8.5 million in annual sales. Most stores include a pharmacy, a photo lab, a cosmetics counter, and a general merchandise area.

Take Care Health Systems, a subsidiary, operates its Take Care Health Clinics inside an increasing number of Walgreens stores. Nurse Practitioners, (and in some states, Pharmacists^{[citation needed]}) treat common illneses, prescribe medicines, perform screenings and offer vaccinations. Patients may have prescriptions filled through Walgreens's "Intercom Plus Pharmacy System"^{[citation needed]}, or at another pharmacy of their choice. These clinics are open on evenings and weekends, with no appointments necessary, and accept insurance plans. Take Care has 119 clinics in 15 U.S. metropolitan areas (as of December 20, 2007), and expects over 550 planned to open in the year 2008.^[3][4]