Quick Answer
Illinois has 16 active area codes: 217, 224, 309, 312, 331, 447, 448, 464, 618, 630, 708, 773, 779, 815, 847, 872. All Illinois area codes are in the Central time zone. Data source: NANPA.
All Area Codes in Illinois
| Code | Region | Major Cities | Timezone |
|---|---|---|---|
| 217 | Central Illinois | Springfield, Champaign, Decatur | Central |
| 224 | Northern Illinois (suburban Chicago) | Evanston, Skokie, Waukegan | Central |
| 309 | Central Illinois | Peoria, Bloomington, Normal | Central |
| 312 | Chicago (city core) | Chicago (downtown), The Loop, Near North Side | Central |
| 331 | Western suburban Chicago | Aurora, Naperville, Bolingbrook | Central |
| 447 | Central Illinois (overlay) | Springfield, Champaign, Decatur | Central |
| 448 | Northern Illinois (overlay) | Evanston, Skokie, Waukegan | Central |
| 464 | Chicago south suburbs (overlay) | Harvey, Calumet City, Oak Lawn | Central |
| 618 | Southern Illinois | Belleville, East St. Louis, Carbondale | Central |
| 630 | Western suburban Chicago | Aurora, Naperville, Elgin | Central |
| 708 | Southern suburban Chicago | Cicero, Berwyn, Oak Park | Central |
| 773 | Chicago (surrounding neighborhoods) | Chicago (NW side), Chicago (SW side), Chicago (NE side) | Central |
| 779 | Northern Illinois (overlay) | Rockford, Joliet, Aurora (part) | Central |
| 815 | Northern Illinois | Rockford, Joliet, Waukegan (part) | Central |
| 847 | Northern suburban Chicago | Waukegan, Evanston, Skokie | Central |
| 872 | Chicago (overlay) | Chicago, Evanston, Oak Park | Central |
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Frequently Asked Questions
How many area codes does Illinois have?
Illinois has 16 active area codes: 217, 224, 309, 312, 331, 447, 448, 464, 618, 630, 708, 773, 779, 815, 847, 872.
What are the area codes in Illinois?
The area codes in Illinois are: 217 (Central Illinois), 224 (Northern Illinois (suburban Chicago)), 309 (Central Illinois), 312 (Chicago (city core)), 331 (Western suburban Chicago), 447 (Central Illinois (overlay)), 448 (Northern Illinois (overlay)), 464 (Chicago south suburbs (overlay)), 618 (Southern Illinois), 630 (Western suburban Chicago), 708 (Southern suburban Chicago), 773 (Chicago (surrounding neighborhoods)), 779 (Northern Illinois (overlay)), 815 (Northern Illinois), 847 (Northern suburban Chicago), 872 (Chicago (overlay)).
What area code is Springfield?
Springfield uses area code 217, located in Central Illinois, Illinois.
What time zone are Illinois area codes in?
All area codes in Illinois are in the Central time zone.
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