Walgreens Deerfield, IL Walgreen Co. is the leading U.S. drugstore chain. The company's strategy is to be the nation's most convenient healthcare provider. Walgreens operates over 7,500 stores nationwide. SHARE THIS PAGE: Get Alerts about Walgreens By signing up, I agree to the Terms and to receive emails from POPSUGAR. Never Miss a Story! SWEET! You’re all signed up.