Walgreens: CSR & Sustainability News
Walgreen Co. doing business as Walgreens (without an apostrophe), is the largest drugstore chain in the United States of America. As of August 31st 2011, the company operates 8,210 locations across all 50 states, the District of Columbia and Puerto Rico. Founded in Chicago, Illinois in 1901, and has since expanded throughout the United States. Walgreens is currently headquartered in the nearby suburb of Deerfield, Illinois.