Area code 312: Chicago, Illinois
Area code 312 is a Illinois code serving Chicago, on Central Time. It overlays 872, so numbers in the same area may start with any of them. From abroad, dial +1 312 and the 7-digit number.
Updated
At a glance
- State
- Illinois
- Places served
- Chicago
- Time zone
- Central TimeUTC−6, UTC−5 in summer
- Overlay codes
- 872Same area, assigned when numbers ran short.
- Country
- United States (+1)
- Number format
- (312) 555-0123+1 312 555 0123 in international format
How to call a 312 number
All +1 numbers are 10 digits: the 3-digit area code and a 7-digit local number.
| Calling from | Dial |
|---|---|
| Inside the US or Canada | 1 312 555 0123 |
| The UK and most of Europe | 00 1 312 555 0123 |
| Australia | 0011 1 312 555 0123 |
| Any mobile | +1 312 555 0123 |
555-0123 is a placeholder; use the real 7-digit number.
Get a (312) number without living there
A callmins US number costs $2.00/month, no setup fee. It rings in your browser or the callmins app anywhere in the world, receives texts, and needs no ID or local address. When you buy, search by area code to look for a 312 number.
Availability changes daily
Popular codes sell out. If there's no 312 number free, try the overlay code 872 or another Illinois code below. US numbers don't receive WhatsApp codes; use a UK number for that.
Other Illinois area codes
Questions people ask
Where is area code 312?
Area code 312 is in Illinois, the United States. It serves Chicago, and shares the same area with 872 (overlay codes).
What time zone is area code 312?
Area code 312 is on Central Time (UTC−6, UTC−5 in summer). Where an area straddles a time-zone line, this is the time most of its callers keep.
How do I call a 312 number from abroad?
Dial your exit code, then 1, then 312 and the 7-digit number: 00 1 312 from the UK and most of Europe, or +1 312 from any mobile. Inside the US and Canada, dial 1 312 and the number.
Is a call from area code 312 a scam?
312 is an ordinary geographic area code, not a premium-rate or toll-free one. But caller ID can be faked, so a familiar-looking local code proves nothing about who is calling. Don't share codes or payment details with an unexpected caller.
Can I get a 312 phone number?
You can search callmins for a 312 number when you buy a US number ($2.00/month, no setup fee). Which area codes have numbers free changes daily; if 312 has none, pick a nearby or overlay code such as 872.
Related
A 312 number, in your browser.
$2.00/month, no setup fee. Calls and texts on your laptop or phone, from anywhere.
Area code details are compiled from North American Numbering Plan assignments and list the best-known places served; check NANPA for the full boundary.