Area code 224: where it is and who calls from it
Area code 224 is in Illinois.
Illinois (North and northwest suburbs of Chicago)
| Where | Illinois |
|---|---|
| Time zone | Central Time ยท local time |
| In service since | 2002 |
| Overlay | Yes, with 847 |
| Prefixes assigned | 594 of 792 possible (75%) |
Overlay: 224 covers the same area as 847. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 224 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 224, with how many prefixes each has.
Who holds 224 numbers
- Mobile carrier 54%
- Local phone company 7%
- Internet / business phone carrier 36%
- Phone company 4%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| T-Mobile (including Sprint) | Mobile carrier | 138 | 23% |
| AT&T Mobility | Mobile carrier | 92 | 15% |
| Verizon Wireless | Mobile carrier | 76 | 13% |
| Onvoy | Internet / business phone carrier | 72 | 12% |
| AT&T (local phone) | Local phone company | 34 | 6% |
| Fractel | Internet / business phone carrier | 29 | 5% |
| Level 3 (Lumen) | Internet / business phone carrier | 19 | 3% |
| Teleport Communications America | Internet / business phone carrier | 19 | 3% |
| Bandwidth | Internet / business phone carrier | 17 | 3% |
| MCImetro (Verizon Business) | Internet / business phone carrier | 16 | 3% |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number.
States served: Illinois.
Other area codes in Illinois
217 309 312 331 447 464 618 630 708 730 773 779 815 847 861 872
Got a call from 224?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 224 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.