Chicago Area Code Map

Area code 312 then served the downtown area, or inside the loop and area code 773 served the remainder of the city. The data can be viewed on the chicago data portal with a web browser. Within the city limits there are close to 60 different chicago.

Area code map the usa.com website and domain are privately owned and are not operated by or affiliated with any government or municipal authority. In the group of original north american area codes, established in 1947, all of chicago was part of the 312 numbering plan area, the rest of northern illinois was 815, central illinois was 217, and southern illinois was 618.in 1957, area code 815 was split for the assignment of area code 309 to western central illinois. View all zip codes in il or use the free zip code lookup.

2016 cost of living index in zip code 60018:

Area code 312 then served the downtown area, or inside the loop and area code 773 served the remainder of the city. This map was created by a user. View all zip codes in il or use the free zip code lookup. Chicago, il has the following exchanges (nxx) npa nxx usage company name nxx introduced date ;