Area Code 847 History:
Area code 847 was put into service. Area code 847 created from a split of area code 708. In 1998 area code 847 was overlaid with area code 224 but it was not put into service until 2002.
Counties in Illinois using area code 847 include:
Cook County, Kane County, Lake County, McHenry County.
Major cities or places in Illinois using area code 847 include:
Area codes 224 and 847 serve northeastern Illinois including the larger cities and communities of Arlington Heights, Buffalo Grove, Carpentersville, Des Plaines, Elgin, Elk Grove Village, Evanston, Glenview, Gurnee, Highland Park, Hoffman Estates, Lake Forest, Lake in the Hills, Libertyville, Morton Grove, Mount Prospect, Mundelein, Niles, North Chicago, Northbrook, Palatine, Park Ridge, Rolling Meadows, Round Lake Beach, Schaumburg, Skokie, Vernon Hills, Waukegan, Wheeling, Wilmette and Zion, in addition to many smaller communities within the area codes 224 and 847 overlay service area.