331 area code spam & scam calls

Got a call from 331? The 331 area code covers West Suburban Chicago, IL. 461 spam and scam calls have been reported from 331 numbers, contributing to 186,426 fraud reports filed in Illinois ($318 million in losses).

331 reports in the last 7 / 30 / 90 days

Rolling community-report counts for 331 numbers, refreshed daily.

Cities served: Aurora, Naperville.

Top reported scam patterns from 331

• impostor scams
• online shopping fraud

Top 3 scam types tied to 331 (Illinois region)

1. impostor scams
2. online shopping fraud
3. credit bureau scams

Region patterns include statewide trends from the FTC Consumer Sentinel Network Data Book 2024 (186,426 reports, $318 million in losses across Illinois).

Related area codes

• 217 area code spam & scam calls — Central IL
• 224 area code spam & scam calls — North Suburban Chicago, IL
• 309 area code spam & scam calls — West Central IL
• 312 area code spam & scam calls — Chicago, IL
• 447 area code spam & scam calls — Central IL
• 464 area code spam & scam calls — South Suburban Chicago, IL
• 303 area code spam & scam calls — Denver, CO
• 870 area code spam & scam calls — East/South AR
• 914 area code spam & scam calls — Westchester County, NY
• 877 area code spam & scam calls
• 720 area code spam & scam calls — Denver, CO
• 480 area code spam & scam calls — East Valley (Mesa, Scottsdale), AZ

What to do if a 331 number calls you

1. Don't answer unknown 331 numbers — let them go to voicemail.
2. If you answered, never confirm personal information or press numbers to "speak with an agent".
3. Block the number on your phone and report it at donotcall.gov.
4. File a complaint with the Illinois Attorney General Consumer Protection at https://www.illinoisattorneygeneral.gov/consumers/filecomplaint.html.
5. Report federally to the FTC at reportfraud.ftc.gov.

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