Pick 312 for downtown Chicago and 773 for the rest of the city.
312 covers downtown, 773 covers the rest of Chicago, and 872 is laid over both.
Illinois has 17 area codes: 217, 312, 618, 815, 309, 708, 847, 630, 773, 224, 779, 331, 872, 447, 464, 861 and 730.
Area codes in Illinois
Get a phone number with the right area code for Illinois.
312, 773 and 872 are Chicago, and the suburbs are split by direction: 708 to the south and west, 847 and 224 to the north, and 630 and 331 to the west. Beyond them 217 is Springfield, 309 is Peoria, 618 is Belleville and 815 is Rockford.
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Illinois has 17 area codes.
In the order they opened.
- 217Since 1947Springfield, Champaign and Decatur
122 FCC complaints
Get a 217 number - 312Since 1947Downtown Chicago
95 FCC complaints
Get a 312 number - 618Since 1947Belleville and southern Illinois
91 FCC complaints
Get a 618 number - 815Since 1947Rockford, Joliet and northern Illinois
109 FCC complaints
Get an 815 number - 309Since 1957Peoria and west-central Illinois
75 FCC complaints
Get a 309 number - 708Since 1989The south and west suburbs of Chicago
165 FCC complaints
Get a 708 number - 847Since 1996The northern and northwest Chicago suburbs
57 FCC complaints
Get an 847 number - 630Since 1996Naperville, Aurora and the western suburbs of Chicago
707 FCC complaints
Get a 630 number - 773Since 1996Chicago
128 FCC complaints
Get a 773 number - 224Since 2002The northern and northwest Chicago suburbs
88 FCC complaints
Get a 224 number - 779Since 2007Rockford, Joliet and northern Illinois
22 FCC complaints
Get a 779 number - 331Since 2007Aurora, Naperville and Wheaton
42 FCC complaints
Get a 331 number - 872Since 2009Chicago
72 FCC complaints
Get an 872 number - 447Since 2021No page yet
27 FCC complaints
- 464Since 2022No page yet
43 FCC complaints
- 861Since 2023No page yet
1 FCC complaint
- 730Since 2023No page yet
13 FCC complaints
730
The newest area code in Illinois is 730.
730 entered service in 2023, laid over 618 in Belleville and southern Illinois. 861, 464 and 447 came before it, over 309, 708 and 217.
Pick 312 or 773 for Chicago, 847 for the north suburbs, 630 for the west or 708 for the south.
Pick 847, 630 or 708 for the suburbs.
847 covers the north and northwest suburbs, 630 covers Naperville and Aurora in the west, and 708 covers the south and west suburbs.
Pick 815, 217, 309 or 618 for the rest of Illinois.
815 is Rockford and Joliet, 217 is Springfield and Champaign, 309 is Peoria, and 618 is Belleville and southern Illinois.
People filed 1,857 FCC complaints about unwanted calls from Illinois area codes in 12 months.
From October 2025 to September 2026, 1,857 unwanted-call complaints filed with the FCC gave a caller ID number that started with one of the Illinois codes. 630 was named most, on 707 of them (38%).
- 1,857unwanted-call complaints named an Illinois code
- 630was named on the most of them, 707
- 38%of the Illinois complaints named 630
Illinois codes
How many complaints named a caller ID that starts with each of the 10 Illinois codes named most.
- 1630Naperville, Aurora and the western suburbs of Chicago707
- 2708The south and west suburbs of Chicago165
- 3773Chicago128
- 4217Springfield, Champaign and Decatur122
- 5815Rockford, Joliet and northern Illinois109
- 6312Downtown Chicago95
- 7618Belleville and southern Illinois91
- 8224The northern and northwest Chicago suburbs88
- 9309Peoria and west-central Illinois75
- 10872Chicago72
Source: Federal Communications Commission, CGB - Consumer Complaints Data (dataset 3xyp-aqkj), issue "Unwanted Calls", read on November 4, 2026. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
This is how you get an Illinois number.
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Type the code you picked.
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People ask these questions about Illinois area codes.
More in the full FAQ.
630 and 331 both cover Naperville, along with Aurora and Wheaton.
773, which also covers Rogers Park and Edgewater. 872 is laid over it.
Illinois has 17 area codes in service, by the numbering administrator's report of October 23, 2026: 217, 312, 618, 815, 309, 708, 847, 630, 773, 224, 779, 331, 872, 447, 464, 861 and 730. They are listed in the order they opened, from 1947 to 2023.
The newest area code in Illinois is 730, in service since 2023. 730 entered service in 2023, laid over 618 in Belleville and southern Illinois. 861, 464 and 447 came before it, over 309, 708 and 217.
From October 2025 to September 2026, people filed 1,857 FCC complaints about unwanted calls from numbers that start with an Illinois code. The five named most were 630 (707), 708 (165), 773 (128), 217 (122) and 815 (109). A complaint is one person's report. Caller ID can be faked, so a code shows what appeared on the phone, not where the caller was.
Yes. You type the area code you want when you create a number, and you do not need to live in Illinois. Calls ring the phone you already have, and texts land in your ExpressNumber inbox.
No. Your numbers are receive-only: they take calls and texts, and they never make them. You answer calls on your own phone, and you cannot reply to a text from the inbox.
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Cities in Illinois
States next to Illinois
More area codes
Every fact on this page comes from public numbering records.
The codes, the places and the years are rows of the North American Numbering Plan Administrator's area code database (its report of October 23, 2026), and the complaints are the FCC's own.
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