Area Code 312

There are 800 phone number prefixes within area code 312. Additionally, there are more than 9,400 phone numbers in this area code that have received at least one user report. The location of calls from area code 312 is Illinois, USA. Most numbers in this area code are in US Central time, where the time is currently 8:15:57 PM on June 7, 2025.
 
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