Illinois Area Codes
Illinois is served by 17 telephone area codes in the North American Numbering Plan (NANP). These area codes serve different communities and regions throughout the state.
Below is a list of the area codes serving Illinois. Select an area code to find information about its major cities, prefixes, companies, and community caller reports.
Area Codes in Illinois
| Area Code | Major Cities | Reports |
|---|---|---|
| 217 | Decatur, Quincy, Danville | 4 reports |
| 224 | Elgin, Waukegan, Evanston | 6 reports |
| 309 | Peoria, Moline, Rock Island | 8 reports |
| 312 | Wheeling, Northbrook, Roselle | 12 reports |
| 331 | Aurora, Naperville, Wheaton | 8 reports |
| 447 | Decatur, Quincy, Danville | 2 reports |
| 464 | Cicero, Oak Lawn, Tinley Park | 1 report |
| 618 | Belleville, O'Fallon, Alton | 7 reports |
| 630 | Aurora, Naperville, Elgin | 11 reports |
| 708 | Cicero, Oak Lawn, Tinley Park | 3 reports |
| 730 | Belleville, O'Fallon, Alton | 4 reports |
| 773 | — | 5 reports |
| 779 | Joliet, Rockford, Plainfield | 8 reports |
| 815 | Joliet, Rockford, Plainfield | 10 reports |
| 847 | Elgin, Waukegan, Evanston | 10 reports |
| 861 | — | 1 report |
| 872 | — | 6 reports |
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Caller Reports in Illinois
| Category | Reports |
|---|---|
| Unknown Caller | 72 |
| Scam | 27 |
| Debt Collection | 3 |
| Telemarketer | 3 |
| Robocall | 1 |
Top 10 Largest Cities in Illinois
| City | Population |
|---|---|
| Chicago city | 2,731,585 |
| Aurora city | 181,505 |
| Naperville city | 153,114 |
| Joliet city | 152,241 |
| Rockford city | 147,384 |
| Elgin city | 115,476 |
| Springfield city | 112,989 |
| Peoria city | 110,920 |
| Champaign city | 91,195 |
| Waukegan city | 87,940 |
Illinois Area Code Map
Community Reports in Illinois
Category: Unknown Caller
Whose number is this they just called me
Category: Unknown Caller
(630) 947-0400 tracks to Shimea Bonner, but a recording answers the phone "thank you for calling RECEIVABLES MANAGEMENT"
Category: Telemarketer
Telemarketer!!!
Category: Unknown Caller
repeated calls for vacation, elder alerts. Hung up on me when asked to be removed from their call list.
Category: Unknown Caller
Asked to leave a message for call back, no identifiers.
Category: Unknown Caller
A marketer for Yelp "asking about our listing."
Category: Unknown Caller
The moment i picked up the call, the caller just shouted very loudly on the phone. She continued to scold and shout as she liked and i dont the chance to talk back. It was irritating so i hung up the call immediately.
Category: Scam
Scammer from craglists
Category: Scam
Scam call from 11584163 (obviously forged) & gave this # (217....) as a call back #. Claimed to be a windows technician wanting access to fix my computer. The guy had a heavy Indian-?accent & hung up when I kept aasking him personal questions.
Category: Unknown Caller
caller ID: ALTAMONTS<br />I did not answer, no message was left.
Category: Unknown Caller
I have received harassing calls from this number by a man who says degrading, sexually explicit things to me.
Category: Unknown Caller
hang up
Category: Unknown Caller
hang up
Category: Unknown Caller
spam via text message
Category: Unknown Caller
spam via text message
Category: Unknown Caller
Texted me randomly, I don't know who they are
Category: Unknown Caller
A voice recording said, " This is the last attempt that is being made. The IRS is suing you." They gave a phone number to call, but I didn't have anything to write it down.
Category: Unknown Caller
calling multiple time, not leaving message.
Category: Scam
Received 2 calls from this number claiming to be my relative from another state which is not true. Verified by calling my family. This is a SCAM.
Category: Telemarketer
Keeps calling even after requesting not to. Is not from telemarketing since he also keeps messaging.
Timezone
Illinois's area codes primarily use the Central Timezone.
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