| District of Illinois area codes: 847 | |
|---|---|
| Country | United States |
| State/Province | Illinois |
| Major City | Chicago |
| Time Zone | Central |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 847-201 | Lake | Round Lake, IL | Broadwing Communications |
| 847-202 | Cook | Palatine, IL | Ameritech Illinois |
| 847-203 | Cook | Northbrook, IL | Usa Mobility Wireless |
| 847-204 | Cook | Northbrook, IL | Cellco Partnership DBA Verizon Wireless |
| 847-205 | Cook | Northbrook, IL | Ameritech Illinois |
| 847-206 | Cook | Northbrook, IL | American Messaging (am) |
| 847-207 | Cook | Park Ridge, IL | New Cingular Wireless PCS |
| 847-208 | Lake | Lake Villa, IL | T-mobile Usa |
| 847-209 | Dupage | Hinsdale, IL | New Cingular Wireless PCS |
| 847-210 | Cook | Northbrook, IL | Usa Mobility Wireless |
| 847-212 | Cook | Wheeling, IL | New Cingular Wireless PCS |
| 847-213 | Cook | Skokie, IL | Rcn Telecom Services Of Illinois |
| 847-214 | Kane | Elgin, IL | Ovation Communications Of Illinois |
| 847-215 | Cook | Wheeling, IL | Ameritech Illinois |
| 847-216 | Cook | Northbrook, IL | Usa Mobility Wireless |
| 847-217 | Dupage | Roselle, IL | New Cingular Wireless PCS |
| 847-218 | Cook | Northbrook, IL | Usa Mobility Wireless |
| 847-219 | Lake | Lake Forest, IL | T-mobile Usa |
| 847-220 | Dupage | Roselle, IL | New Cingular Wireless PCS |
| 847-221 | Dupage | Bensenville, IL | Mcimetro Access Transmission Services LLC |
There are 783 prefixes, In the code area, the major cities are Algonquin, IL;Arlington Heights, IL;Buffalo Grove,. The major city is Chicago.