Illinois area codes
Illinois has 17 area codes: 217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 861, 872.
- 217 — Champaign
- 224 — Chicago
- 309 — Peoria
- 312 — Chicago
- 331 — Chicago
- 447 — Champaign
- 464 — Chicago
- 618 — Belleville
- 630 — Chicago
- 708 — Chicago
- 730 — Belleville
- 773 — Chicago
- 779 — Aurora
- 815 — Aurora
- 847 — Chicago
- 861 — Peoria
- 872 — Chicago
Area codes by city in Illinois
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.