Trusted Area Code Safety Network
312 area code serves 312 serves the Chicago Loop of the city of Chicago, Illinois. It encompasses only a few square miles, roughly bounded by North Avenue to the north, Ashland Avenue to the west, Lake Michigan on the east, and 31st Street on the south.
Central Time (CT)
UTC-6 / UTC-5 (DST)
Be cautious with 312 area code calls: This Chicago area code is frequently used in phone scams targeting people nationwide. Common scams include fake IRS calls, tech support fraud, and prize/lottery scams.
Most 312 calls are legitimate, but, but this area code is frequently used by scammers. 312 is a legitimate Chicago area code, but scammers often spoof it because:
Tip: If you don't recognize the number, screen the call via voicemail. Legitimate callers will leave a message.
Here's how to verify 312 calls:
312 area code serves central Chicago and surrounding areas:
Note: 312 overlaps with area codes 323 and 738 in the same geographic region.
Yes, 312 is an Illinois area code. It's exclusively for Chicago, Illinois.
Other major Illinois area codes include:
If someone claims to be calling from another state with a 312 number,请警惕号码伪造。
312 was one of the original area codes established in 1947 when the North American Numbering Plan began.
If caller claims urgent issue:
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Legitimate companies won't ask for SSN, passwords, or financial details over the phone.
Scammers create urgency. Legitimate calls can wait while you verify.
Use Google Voice (free) or a burner number for online shopping, dating apps, and business listings.
If they claim to be from a company, hang up and call the official number.
Report suspicious calls to FTC at reportfraud.ftc.gov
Keep your main number private. Give out your secondary number for deliveries, rentals, and online accounts.
Number A (Private): Family, close friends, work, bank, medical
Number B (Public): Online shopping, dating apps, food delivery, social media, business listings
About 20% of Americans use this strategy. Popular options: Google Voice (free), carrier second lines ($10-20/month), or dual-SIM phones.
All area code geographic assignments and overlay information are sourced directly from the North American Numbering Plan Administration (NANPA) official database and Federal Communications Commission (FCC) public records.
Timezone data verified against the Internet Assigned Numbers Authority (IANA) timezone database.
Scam risk assessments based on Federal Trade Commission (FTC) Consumer Sentinel Network reports and verified telecommunications security databases.
Data last updated: August 2025 |
NANPA Registry Verified