• Name
  • Phone
  • Address

331 Area Code Information

State: IL

Largest City in Area: AURORA

Where is Area Code 331? Area code (331) is in the state of IL. The PeopleSearchNow database has 22,234 records on file with a phone number in the area code of (331). Below, are the major cities in the area code (331).

Major Cities in 331

  • AURORA, IL (6,610)
  • CHICAGO, IL (4,085)
  • NAPERVILLE, IL (4,063)
  • GENEVA, IL (1,533)
  • BOLINGBROOK, IL (1,164)
  • MONTGOMERY, IL (1,106)
  • OSWEGO, IL (954)
  • LISLE, IL (924)
  • SAINT CHARLES, IL (867)
  • DOWNERS GROVE, IL (846)

Zip Codes in 331

  • 60134
  • 60139
  • 60148
  • 60174
  • 60185
  • 60188
  • 60440
  • 60504
  • 60505
  • 60506
  • 60510
  • 60517
  • 60532
  • 60538
  • 60540
  • 60542
  • 60543
  • 60563
  • 60564
  • 60565