| District of Illinois area codes: 847 | |
|---|---|
| Country | United States |
| State/Province | Illinois |
| Major City | Chicago |
| Time Zone | Central |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 847-364 | Cook | Elk Grove Village, IL | Ameritech Illinois |
| 847-365 | Cook | Northbrook, IL | Usa Mobility Wireless |
| 847-366 | Lake | Lake Zurich, IL | Sprint Spectrum L.p. |
| 847-367 | Lake | Libertyville, IL | Ameritech Illinois |
| 847-368 | Cook | Arlington Hts, IL | Ameritech Illinois |
| 847-369 | Kane | Elgin, IL | Usa Mobility Wireless |
| 847-370 | Cook | Northbrook, IL | Cellco Partnership DBA Verizon Wireless |
| 847-371 | Lake | Libertyville, IL | Mcimetro Access Transmission Services LLC |
| 847-372 | Cook | Palatine, IL | Sprint Spectrum L.p. |
| 847-373 | Dupage | Roselle, IL | New Cingular Wireless PCS |
| 847-374 | Lake | Deerfield, IL | Ameritech Illinois |
| 847-375 | Cook | Des Plaines, IL | Ameritech Illinois |
| 847-376 | Cook | Des Plaines, IL | Broadwing Communications |
| 847-377 | Lake | Waukegan, IL | AT&T Local |
| 847-378 | Dupage | Bensenville, IL | Mcimetro Access Transmission Services LLC |
| 847-379 | Lake | Zion, IL | Teleport Communications America |
| 847-380 | Dupage | Roselle, IL | New Cingular Wireless PCS |
| 847-381 | Lake | Barrington, IL | Ameritech Illinois |
| 847-382 | Lake | Barrington, IL | Ameritech Illinois |
| 847-383 | Lake | Half Day, IL | Teleport Communications America |
There are 783 prefixes, In the code area, the major cities are Algonquin, IL;Arlington Heights, IL;Buffalo Grove,. The major city is Chicago.