| 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 |
|---|---|---|---|
| 217-263 | Sangamon | Springfield, IL | Ameritech Illinois |
| 217-264 | Edgar | Paris, IL | Cellco Partnership DBA Verizon Wireless |
| 217-265 | Champaign | Champaign, IL | Ameritech Illinois |
| 217-266 | Coles | Mattoon, IL | American Messaging (am) |
| 217-267 | Vermilion | Westville, IL | Ameritech Illinois |
| 217-268 | Douglas | Arcola, IL | Illinois Consolidated Telephone Co. |
| 217-269 | Edgar | Chrisman, IL | Frontier North |
| 217-270 | Logan | Mt Pulaski, IL | Comcast Phone Of Illinois DBA Comco |
| 217-271 | Morgan | Jacksonville, IL | Mediacom Telephony Of Illinois |
| 217-272 | Bond | Sorento, IL | Citizens Telecom Co Illinois-frontier Citizens -il |
| 217-273 | Coles | Mattoon, IL | Cellco Partnership DBA Verizon Wireless |
| 217-274 | Vermilion | Danville, IL | Cellco Partnership DBA Verizon Wireless |
| 217-275 | Edgar | Paris, IL | Frontier North |
| 217-276 | Coles | Mattoon, IL | Cellular Properties |
| 217-277 | Adams | Quincy, IL | Ameritech Illinois |
| 217-278 | Champaign | Champaign, IL | Ameritech Illinois |
| 217-279 | Crawford | West York, IL | Frontier North |
| 217-280 | Sangamon | Springfield, IL | Sprint Spectrum L.p. |
| 217-281 | Champaign | Champaign, IL | Peerless Network Of Illinois |
| 217-282 | Champaign | Rantoul, IL | Mediacom Telephony Of Illinois |
There are 736 prefixes, In the code area, the major cities are Champaign, IL;Charleston, IL;Danville, IL;Decatur,. The major city is Chicago.