Geographic Regions and Area Codes

Area Code 773 is located in the state of Illinois, primarily covering the city of Chicago and its innermost neighborhoods, excluding the downtown area. The major cities within this area code include Chicago, Cicero, and Evanston. Additionally, it spans across Cook County and Dupage County. The primary area codes serving this region are 773 and 872. This makes it a significant area for businesses looking to establish a local presence in Chicago and its surrounding neighborhoods.

Key regions and their area codes:

  • Chicago: 773, 872
  • Cicero: 773
  • Evanston: 773