Illinois Area Codes
Illinois has 15 area codes. Located in the Midwest region of the United States.
All Area Codes in Illinois
| Area Code | Primary City / Region | Full Number Format |
|---|---|---|
| 217 | Springfield , Illinois |
+1 (217) XXX-XXXX
|
| 224 | Arlington Heights , Illinois |
+1 (224) XXX-XXXX
|
| 309 | Peoria , Illinois |
+1 (309) XXX-XXXX
|
| 312 | Chicago , Illinois |
+1 (312) XXX-XXXX
|
| 331 | Aurora , Illinois |
+1 (331) XXX-XXXX
|
| 447 | Champaign , Illinois |
+1 (447) XXX-XXXX
|
| 464 | Naperville , Illinois |
+1 (464) XXX-XXXX
|
| 618 | Alton , Illinois |
+1 (618) XXX-XXXX
|
| 630 | Aurora , Illinois |
+1 (630) XXX-XXXX
|
| 708 | Cicero , Illinois |
+1 (708) XXX-XXXX
|
| 773 | Chicago , Illinois |
+1 (773) XXX-XXXX
|
| 779 | Rockford , Illinois |
+1 (779) XXX-XXXX
|
| 815 | Rockford , Illinois |
+1 (815) XXX-XXXX
|
| 847 | Arlington Heights , Illinois |
+1 (847) XXX-XXXX
|
| 872 | Chicago , Illinois |
+1 (872) XXX-XXXX
|
How to Dial Illinois Area Codes
Calling within the US
To call a phone number in Illinois from anywhere within the United States:
1 + (217) + XXX-XXXX
- Dial 1 (the US/Canada country code)
- Dial the area code (e.g., 217)
- Dial the 7-digit local number
Calling from outside the US
To call Illinois from an international location:
[Exit Code] + 1 + (217) + XXX-XXXX
Replace [Exit Code] with your country's international access code
(e.g., 00 from most European countries, 0011 from Australia).
Emergency Numbers
| 911 | Police, Fire, Ambulance (Emergency) |
| 311 | Non-emergency municipal services |
| 211 | Community services and information |
| 988 | Suicide & Crisis Lifeline |
About Illinois Area Codes
Illinois is served by 15 area codes within the North American Numbering Plan (NANP). The area codes are distributed across different cities and regions of the state to accommodate the demand for phone numbers.
All Illinois phone numbers use the international country code +1, followed by the three-digit area code and a seven-digit local number, for a total of 11 digits when dialing internationally.
Some areas of Illinois have overlay area codes, meaning two or more area codes serve the same geographic area. In these regions, 10-digit dialing is mandatory for all local calls.
Illinois at a Glance
| State | Illinois |
|---|---|
| Country Code | +1 |
| Area Codes | 15 |
| Region | Midwest |
| Codes List |
217
, 224
, 309
, 312
, 331
, 447
, 464
, 618
, 630
, 708
, 773
, 779
, 815
, 847
, 872
|
Illinois Map
Map of Illinois area code regions