Cook County Area Codes

About Cook County Area Codes

The county of Cook County, located in Illinois, is served by 5 telephone area code(s) in this dataset. These calling codes cover cities, suburbs, and unincorporated communities across the county.

Major phone area codes used in Cook County include 224, 331, 630, 708, 847. The county mainly follows the America/Chicago time zone.

Cities and towns served by these area codes in Cook County include Arlington Heights, Bellwood, Berwyn, Blue Island, Burbank, Calumet City, Chicago Heights, Cicero, Des Plaines, Dolton, Elk Grove Village, Elmwood Park, Evanston, Evergreen Park, Glenview, Harvey, Hoffman Estates, Lansing, Maywood, Melrose Park, Morton Grove, Mount Prospect, Niles, Northbrook, Oak Forest, Oak Lawn, Oak Park, Orland Park, Palatine, Park Forest, Park Ridge, Rolling Meadows, Schaumburg, Skokie, South Holland, Streamwood, Tinley Park, Wheeling, Wilmette.

List of Area Codes in Cook County, Illinois

The table below lists all telephone area codes used in Cook County, Illinois, along with their associated cities and time zones from this dataset.

Related Area Code Pages

Explore related area code resources on Burning Compass:

• All area codes in Illinois
• Individual area code details are available from the table above.