District of Illinois area codes: 815 | |
---|---|
Country | United States |
State/Province | Illinois |
Major City | Chicago |
Time Zone | Central |
Prefix | County | Primary City | Company |
---|---|---|---|
815-996 | Carroll | Savanna, IL | Sprint Spectrum L.p. |
815-997 | Winnebago | Rockford, IL | Mcleodusa Telecommunications Services- Il |
815-998 | Livingston | Odell, IL | Frontier North |
815-999 | Will | Joliet, IL | Sprint Spectrum L.p. |
815-555 | Used in movie | La Salle, IL | Used in movie |
There are 785 prefixes, In the code area, the major cities are Belvidere, IL;Crystal Lake, IL;De Kalb, IL;Freepor. The major city is Chicago.