231 Area Code

Primary cities: Muskegon, Traverse City, Cadillac, Petoskey, Big Rapids ... all cities

Cities: Alanson, Alba, Alden, Amble, Baldwin, Bear Lake, Bellaire, Beulah, Big Rapids, Bois Blanc, Boyne City, Boyne Falls, Brethren, Brutus, Buckley, Cadillac, Carr, Central Lake, Charlevoix, Cheboygan, Chippewa Lake, Clam River, Copemish Thompsonville, Coral, Dublin, East Jordan, Eastport, Elk Rapids, Ellsworth, Elmira, Evart, Falmouth, Fife Lake, Fountain, Frankfort, Freesoil, Fremont, Fruitport, Glen Lake, Grant, Harbor Springs, Harrietta, Hart, Hesperia, Holton, Honor, Howard City, Hoxeyville, Indian River, Interlochen, Irons, Kaleva, Kalkaska, Kingsley, Lake Ann, Lake City, Lake Leelanau, Lake Of The North, Le Roy, Levering, Ludington, Luther, Mackinaw City, Mancelona, Manistee, Manton, Marion, Mcbain, Mecosta, Merritt, Mesick, Moorestown, Morley, Muskegon, Newaygo, Northport, Old Mission, Onekama, Pellston, Pentwater, Petoskey, Ravenna, Reed City, Scottville, Shelby, South Boardman, St. James, Stanwood, Suttons Bay, Torch River Bridge, Traverse City, Tustin, Twin Lake, Walloon Lake, Wellston, White Cloud, Whitehall, Williamsburg, Wolverine