231 Area Code

The 231 area code is part of the North American Numbering Plan (NANP) and serves the northwestern region of Michigan, USA. It was established in 1999 when it split from the 616 area code due to increasing demand for telephone numbers in the northern Lower Peninsula of Michigan. The 231 area code connects cities, resort towns, rural communities, and shoreline regions along Lake Michigan.

Understanding the 231 Area Code

The 231 area code covers a wide area in northwestern Michigan, including major cities like Traverse City, Muskegon, Cadillac, Ludington, Big Rapids, and smaller towns. It serves as a critical communications link for residents, businesses, tourism, and local government services. 10-digit dialing is required for all local calls in this region.

231 Area Code Map and Geographic Location

The 231 area code map spans the northwestern Lower Peninsula of Michigan. It includes coastal areas along Lake Michigan, inland counties, and various towns and cities. It borders area codes 616, 989, and 906 and covers both urban and rural communities, including tourist destinations and resort areas.

All Major Cities and Regions in the 231 Area Code

  • Traverse City
  • Muskegon
  • Cadillac
  • Ludington
  • Big Rapids
  • Manistee
  • Frankfort
  • Charlevoix
  • Alpena (partial)

Counties Covered by the 231 Area Code

  • Allegan (partial)
  • Lake
  • Newaygo
  • Oceana
  • Manistee
  • Muskegon
  • Grand Traverse
  • Leelanau
  • Wexford
  • Missaukee
  • Charlevoix
  • Emmet (partial)
  • Otsego
  • Kalkaska

ZIP Codes within the 231 Telephone Zone (Examples)

  • 49684 - Traverse City
  • 49442 - Muskegon
  • 49601 - Cadillac
  • 49431 - Ludington
  • 49307 - Big Rapids
  • 49660 - Manistee
  • 49635 - Frankfort
  • 49720 - Charlevoix

Time Zone

The 231 area code is located in the Eastern Time Zone (ET), observing Eastern Standard Time (EST, UTC-5) in winter and Eastern Daylight Time (EDT, UTC-4) during daylight saving time.

Dialing, Phone & Service Details

  • Local dialing: 10-digit dialing is required.
  • Long-distance calls within the USA: Dial 1 + 231 + 7-digit number.
  • International calls: Dial your country�s exit code + 1 + 231 + 7-digit number.
  • Services: The 231 area code is used for landline, mobile, VoIP, and business telecommunication services.

Why the 231 Area Code Matters

The 231 area code is essential for communication across northwest Michigan. It supports tourism in resort towns, commercial activities, residential communities, and government operations. The area code plays a crucial role in connecting people across urban and rural regions, as well as along the Lake Michigan shoreline.

What area code is 231? / Where's area code 231?

What area code is 231? � 231 is the telephone area code serving northwest Michigan, including Traverse City, Muskegon, Cadillac, Ludington, and Big Rapids.

Where's area code 231? � It is located in the northwestern part of Michigan�s Lower Peninsula, bordering area codes 616, 989, and 906.

Frequently Asked Questions (FAQ) about 231 Area Code

What is the 231 area code?

The 231 area code serves the northwestern Lower Peninsula of Michigan, including major cities like Traverse City, Muskegon, Cadillac, and Ludington.

When was the 231 area code created?

It was established in 1999 after splitting from the 616 area code.

Where is area code 231 located?

It is located in northwestern Michigan, covering the northern and western parts of the Lower Peninsula.

What time zone is 231 in?

The 231 area code follows Eastern Time (EST/EDT).

Which counties are included in 231?

Allegan (partial), Lake, Newaygo, Oceana, Manistee, Muskegon, Grand Traverse, Leelanau, Wexford, Missaukee, Charlevoix, Emmet (partial), Otsego, and Kalkaska.

231 Area Code