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Illinois · Central Time

312 Area Code: Chicago, IL

The 312 area code covers Chicago in Illinois, on Central Time. Here is the current local time there, and whether you can legally place a solicitation call to a 312 number right now.

Current local time in the 312 area code

Current local time in the 312 area code

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Can you legally call a 312 number right now?

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DayLegal calling window in Illinois
Sunday9:00 AM-9:00 PM
Monday9:00 AM-9:00 PM
Tuesday9:00 AM-9:00 PM
Wednesday9:00 AM-9:00 PM
Thursday9:00 AM-9:00 PM
Friday9:00 AM-9:00 PM
Saturday9:00 AM-9:00 PM

Windows shown are the stricter of the federal TCPA/TSR rule (8 a.m.-9 p.m. local) and Illinois's own statute, in the called party's local time. Informational only, not legal advice. Check any number against the full TCPA calling hours calculator.

Area code 312 at a glance

StateIllinois
Principal cityChicago
Time zoneCentral Time
Overlay codes872
Weekday calling window9:00 AM-9:00 PM local
CountryUnited States

Cities in the 312 area code

These are the main population centers 312 serves. Smaller towns across the same Illinois region share the code.

  • Chicago

Calling 312 numbers legally

Illinois is stricter than federal law. Illinois's Automatic Telephone Dialers Act bars autodialer calls between 9 p.m. and 9 a.m.: a 9 a.m. start, stricter than the federal 8 a.m. Because the window follows the called party's local time, a 312 number is governed by Illinois rules no matter where you are dialing from.

Ringless voicemail sits under the same rules as a live call, which is why TCPA compliance matters before you drop to a list. To check a whole list rather than one code, the phone number formatter tags every number with its state so you can segment sends by time zone.

Other Illinois area codes

872Chicago217Springfield224Waukegan309Peoria331Aurora447Springfield464Cicero618Belleville630Aurora708Cicero773Chicago779Rockford

Or browse every US area code.

FAQ

312 area code questions

312 is a US telephone area code serving Illinois, on Central Time. Its principal city is Chicago. It shares the same territory with overlay code 872.
Area code 312 is in the state of Illinois. It serves Chicago, and its principal city is Chicago.
The 312 area code is on Central Time (America/Chicago). The panel above shows the current local time there, updated live.
It depends on the local time in Illinois. Illinois's Automatic Telephone Dialers Act bars autodialer calls between 9 p.m. and 9 a.m.: a 9 a.m. start, stricter than the federal 8 a.m. The live verdict above checks the current time against that window for you.
On weekdays, solicitation calls to Illinois numbers are permitted 9:00 AM to 9:00 PM local time. Sunday hours are 9:00 AM to 9:00 PM.
Area code 312 shares its geography with area code 872. Overlay codes cover the same towns, which is why ten-digit dialing is required there: a 312 number and a 872 number can sit on the same street.
Not by itself. 312 is a legitimate Illinois area code used by residents and businesses in Chicago. Scammers do spoof caller ID to show a local area code, because people answer local numbers more often, so treat an unexpected call asking for payment or personal details with suspicion regardless of the prefix.

Reaching Chicago at scale?

VoiceDrop delivers ringless voicemails in your own AI-cloned voice and two-way SMS to Illinois lists, with calling-hour and DNC rules enforced automatically so every drop lands inside the legal window.

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