About Illinois Area Code 773

The 773 area code includes Illinois cities Chicago (outside downtown, includes O'Hare and Midway Airports).

Nearby area codes are 219, 224, 312, 331, 630, 708, 847 and 872.
Search for a phone number:
Example: 773-555-5555

Extended information

The telephone area code 773 was formed in the city of Chicago, Illinois, USA in 1996. The entire city of Chicago and much of northeastern Illinois were originally area code 312. The 708 area code was created for the suburbs, leaving a rump 312, and eventually the city itself was split between 312 in the Downtown/Loop and surrounding areas, and 773, comprising the rest of the city.

773 Area Code Exchanges 100-153:

Back to home