Chicago, Illinois area codes
- Main area code for Chicago
- 312
- Location
- Chicago, Illinois
- Local time
- Central Time
The main area code for Chicago is 312. 3 codes serve the city in total: 312, 773, 872.
Updated 28 July 2026
Area codes in Chicago, Illinois
3 area codes serve Chicago. 312 is the main one.
Chicago area codes by neighbourhood
Coverage inside Chicago follows rate centre boundaries rather than neighbourhood names, but these are the codes you will see in each part of the city.
The Loop and central Chicago
Neighborhoods outside the Loop
Do you need to dial the area code in Chicago?
Yes. Chicago is served by more than one area code, so local calls require the full ten-digit number including the area code.
Spam calls in Chicago
These are the numbers on Chicago’s area codes most reported to the FTC in the 30 days to 28 July 2026. Caller ID can be spoofed, so a local-looking number is not proof of a local caller.
Most reported Chicago numbers · last 30 days
| Number | Reports | Last reported |
|---|---|---|
| (312) 381-8806 | 6 | 18 days ago |
| (312) 667-6281 | 5 | 10 days ago |
| (312) 392-1388 | 3 | 11 days ago |
| (312) 471-8589 | 3 | 18 days ago |
| (312) 548-1005 | 3 | 12 days ago |
A number listed here may itself be a spoofing victim rather than the caller. These are unverified consumer reports.
Source: FTC Do Not Call Reported Calls Data, unverified consumer reports, retrieved 28 July 2026. Request a correction.
Calls from your Chicago number not landing?
Questions
What is the area code for Chicago?
The main area code for Chicago, Illinois is 312. 773, 872 also serve the city.
How many area codes does Chicago have?
Chicago has 3 area codes: 312, 773, 872.
Do I need to dial ten digits in Chicago?
Yes. Chicago is served by more than one area code, so local calls require the full ten-digit number including the area code.
What area code is 312?
Area code 312 covers Chicago and the surrounding area in Illinois.
Can I get a 312 number if I do not live in Chicago?
Yes. VoIP providers issue 312 numbers regardless of where you are, which is how businesses establish a local presence in Chicago without an office there.