Learn about the 331 area code, including its location, cities, time zone, introduction date, and related area codes.
331 Area Code Details
Major Cities in the 331 Area Code
The 331 area code is associated with the following cities and communities:
- Addison
- Bartlett
- Batavia
- Bensenville
- Bloomingdale
- Bolingbrook
- Carol Stream
- Darien
- Downers Grove
- Elmhurst
- Glendale Heights
- Glen Ellyn
- Hanover Park
- Lisle
- Lombard
- Naperville
- North Aurora
- Roselle
- Saint Charles
- Streamwood
- Villa Park
- West Chicago
- Westmont
- Wheaton
- Woodridge
Where Is Area Code 331 Located?
The 331 area code serves communities in Illinois. The exact communities and numbering assignments can change as telephone numbering resources are updated.
331 Area Code Time Zone
The 331 area code is associated with the Central time zone.
When Was 331 Area Code Introduced?
The 331 area code was introduced in 07-Oct-2007.
How to Call a 331 Area Code Number
For a call within the same numbering plan, dial the required local number according to your carrier’s dialing rules. For calls from outside the United States, use the United States country code (+1), followed by the area code and seven-digit telephone number.
Related Area Codes
331 Area Code FAQ
What state is 331 area code in?
The 331 area code is associated with Illinois.
What time zone is 331 area code in?
The 331 area code is associated with Central.
What cities use 331 area code?
Addison|Bartlett|Batavia|Bensenville|Bloomingdale|Bolingbrook|Carol Stream|Darien|Downers Grove|Elmhurst|Glendale Heights|Glen Ellyn|Hanover Park|Lisle|Lombard|Naperville|North Aurora|Roselle|Saint Charles|Streamwood|Villa Park|West Chicago|Westmont|Wheaton|Woodridge
More Questions About Area Code 331
What state is area code 331 in?
Area code 331 is associated with Illinois.
What time zone is area code 331 in?
The listed time zone for area code 331 is Central.