312 area code
The 312 area code covers downtown Chicago, including the Loop, Illinois. Main cities include Chicago.
- State
- Illinois
- Main cities
- Chicago
- Time zone
- Central Time
- Same area as
- 872
- In service since
- 1947
- Local calls
- 1 + 10 digits
Get a free 312 number for your business
Pick 312 when you set up your number and Scheduley gives your business a local Chicago number for calls and texts, answered 24/7 by an AI receptionist that books appointments and jobs. The number is free. AI calls are $2 a minute after your 10 welcome minutes.
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Where is the 312 area code?
Area code 312 covers downtown Chicago, including the Loop, Illinois, including Chicago. It went into service in 1947, as one of the original North American area codes. It shares the same area with 872, so new local numbers there can get any of these codes. Local calls are dialed as 1 plus the 10-digit number.
Got a call from a 312 number?
A 312 number was first given out in the Chicago area. Area codes show where a number was assigned, not where the caller is today, and spam callers can fake any number. If you don’t know the caller, let it go to voicemail or look up the full number before you call back.
312 area code FAQ
Where is the 312 area code?
312 covers downtown Chicago, including the Loop, Illinois, including Chicago.
What time zone is area code 312?
Area code 312 is on Central Time.
What other area codes cover the same area as 312?
872. They’re overlay codes for the same area, so a local number there can have any of them.
Can I get a free 312 business phone number?
Yes. Pick 312 when you set up your Scheduley number and it gets a local number for you, if one is available. The number is free, and an AI receptionist can answer it 24/7 and book appointments.