Grant, Michigan

Where Is Area Code 231?

Area code 231 is in western and northern Michigan. It serves much of the Lower Peninsula along the Lake Michigan shoreline and extends inland across a broad part of northern Michigan. Grant, Michigan, is one of the communities within the 231 area code.

Major cities and communities in area code 231 include Muskegon, Traverse City, Ludington, Petoskey, Cadillac, Big Rapids, and Manistee. The area code covers all or parts of many counties in western and northern Lower Michigan, including Muskegon County, Grand Traverse County, Manistee County, Mason County, Oceana County, Wexford County, and Newaygo County.

The region includes major Lake Michigan shoreline communities and well-known natural features. It covers places near Sleeping Bear Dunes National Lakeshore, Grand Traverse Bay, and the Manistee National Forest. These landmarks make area code 231 closely tied to Michigan’s western coast and northern recreation areas.

History of Area Code 231

Area code 231 was created on June 5, 1999. It was split from area code 616 as telephone demand grew in western Michigan and more phone numbers were needed for the region.

Area code 231 remains a standalone geographic area code. It has not been overlaid by another area code. The split reflected continued population growth, tourism activity, and business development across western and northern Lower Michigan in the late 20th century.

Key Facts About Area Code 231

• Area code 231 is in the state of Michigan.
• Grant, Michigan, is one community that uses area code 231.
• Major cities in area code 231 include Muskegon, Traverse City, Ludington, Petoskey, Cadillac, Big Rapids, and Manistee.
• Area code 231 was created on June 5, 1999, in a split from area code 616.
• Area code 231 is a geographic area code, not a toll-free code.
• The 231 area generally follows the Eastern Time Zone, including cities such as Muskegon, Traverse City, and Petoskey.
• Area code 231 includes notable places such as Sleeping Bear Dunes National Lakeshore and Grand Traverse Bay.
• Ferris State University in Big Rapids and West Shore Community College in Mason County are within the broader 231 service region.

Frequently Asked Questions

What state is area code 231 in?

Area code 231 is in Michigan.

What major cities use area code 231?

Major cities that use area code 231 include Muskegon, Traverse City, Ludington, Petoskey, Cadillac, Big Rapids, and Manistee.

Is area code 231 a toll-free number?

No. Area code 231 is a geographic area code.