US Area Code
231
Northern Michigan · Michigan
Area code 231 serves Traverse City, Muskegon, Big Rapids and surrounding areas in Michigan. Look up any 231 number below to check for spam, see caller ID, carrier, and line type.
Area Code Details
- State / Territory
- Michigan
- Region
- Northern Michigan
- Major Cities
- Traverse City, Muskegon, Big Rapids
- Timezone
- Eastern Time
- Country
- United States
- Format
- +1 (231) XXX-XXXX