Area code 847 serves the northern suburbs of Chicago, Illinois, including cities such as Evanston, Arlington Heights, Skokie, and Waukegan. Established in 1996 from a split with 708, it is overlaid by area code 224, making ten-digit dialing mandatory. The region is highly developed and home to numerous corporate headquarters, affluent communities, and key transportation routes. Area code 847 is an important part of the identity of Chicago’s North Shore and northwest suburbs, often associated with business prestige, suburban affluence, and proximity to the urban core.