Learn about the 231 area code, including its location, cities, time zone, introduction date, and related area codes.
231 Area Code Details
Major Cities in the 231 Area Code
The 231 area code is associated with the following cities and communities:
- Muskegon
- Norton Shores
- Shelby
Where Is Area Code 231 Located?
The 231 area code serves communities in Michigan. The exact communities and numbering assignments can change as telephone numbering resources are updated.
231 Area Code Time Zone
The 231 area code is associated with the Eastern time zone.
When Was 231 Area Code Introduced?
The 231 area code was introduced in 05-Jun-1999.
How to Call a 231 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.
231 Area Code FAQ
What state is 231 area code in?
The 231 area code is associated with Michigan.
What time zone is 231 area code in?
The 231 area code is associated with Eastern.
What cities use 231 area code?
Muskegon|Norton Shores|Shelby
More Questions About Area Code 231
What state is area code 231 in?
Area code 231 is associated with Michigan.
What time zone is area code 231 in?
The listed time zone for area code 231 is Eastern.