Chicagoland is an informal name for the Chicago metropolitan area. There is no official ..... Main article: List of Illinois areacodes. From 1947 until 1988, the ...
Area code 773 went into effect in the city of Chicago, Illinois, on 12 October 1996. ... Then, in 1989, area code 708 was created for the suburbs, leaving a rump 312. ... website; List of exchange...
