Area code 231
Area code 231 is a telephone area code in the North American Numbering Plan. It serves Michigan, the United States.
- 231area code
- MIMichigan
- UScountry
- 5-Jun-99in service
How to dial a 231 number
From within the United States and Canada, dial 1, then 231, then the seven-digit number. From another country, dial your international access code, then +1 231 and the seven-digit number.
Area code 231 covers the same territory as 616. When several area codes share one area like this, it is called an overlay.
Other area codes in Michigan
248, 269, 313, 517, 586, 616, 679, 734, 810, 906, 947, 989
Frequently asked questions
Where is area code 231?
Area code 231 serves Michigan, the United States.
What is the country code for a 231 number?
Numbers with North American area codes use the country calling code +1.