| District of Illinois area codes: 217 | |
|---|---|
| Country | United States |
| State/Province | Illinois |
| Major City | Chicago |
| Time Zone | Central (UTC-06:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 217-388 | Ford | Melvin, IL | Frontier North |
| 217-389 | Logan | Emden, IL | Bitwise Communications |
| 217-390 | Champaign | Champaign, IL | Sprint Spectrum L.p. |
| 217-391 | Sangamon | Springfield, IL | Mcleodusa Telecommunications Services- Il |
| 217-392 | Hancock | Augusta, IL | Adams Telephone Cooperative |
| 217-393 | Vermilion | Catlin, IL | Sbc Internet Services |
| 217-394 | Iroquois | Buckley, IL | Frontier North |
| 217-395 | Ford | Roberts, IL | Frontier North |
| 217-396 | Champaign | Ludlow, IL | Frontier Communications Of The Carolinas, Inc |
| 217-397 | Vermilion | Rankin, IL | Frontier Communications Of The Carolinas, Inc |
| 217-398 | Champaign | Champaign, IL | Ameritech Illinois |
| 217-399 | Christian | Bulpitt, IL | Mediacom Telephony Of Illinois |
| 217-400 | Sangamon | Springfield, IL | North County Communications Corp. - CA |
| 217-401 | Scott | Bluffs, IL | Level 3 Communications |
| 217-402 | Champaign | Champaign, IL | Mci Worldcom Communications |
| 217-403 | Champaign | Champaign, IL | Ameritech Illinois |
| 217-404 | Greene | Roodhouse, IL | Level 3 Communications |
| 217-405 | Greene | White Hall, IL | Level 3 Communications |
| 217-406 | Pike | Griggsville, IL | Level 3 Communications |
| 217-407 | Pike | Pittsfield, IL | Level 3 Communications |
There are 736 prefixes, In the code area, the major cities are Champaign, IL;Charleston, IL;Danville, IL;Decatur,. The major city is Chicago.