Chicago, Illinois · CST/CDT (UTC-6)
Chicago downtown core (Loop, Near North, Near South Side)
Downtown Chicago. Suburbs use 773, 630, 847, 224, 872.
Area code 312 is in Chicago, Illinois. It covers Chicago downtown core (Loop, Near North, Near South Side).
Area code 312 (Chicago, Illinois) is in the CST/CDT time zone (UTC-6 standard time, UTC-5 during Daylight Saving Time).
Area code 312 itself is legitimate — it serves Chicago, Illinois. However, scammers can spoof any area code. If you receive an unexpected call from 312, verify the caller's identity before sharing personal information. Legitimate businesses in Chicago will use this code.
Area code 312 (Chicago) is in the CST/CDT zone. Check the live clock at whattime.city/chicago/ for the current time.