231 area code is a telephone area code in the North American Numbering Plan (NANP) for northwestern Michigan, United States. The area code was created in 1999.
| Area Code | 231 |
|---|---|
| Major City | Muskegon |
| Service Date | 06/05/1999 |
| Time Zone | Eastern |
| Overlay Complex | - |
| Location | Michigan (MI) |
| Country | United States |
Some of the cities served by area code 231 include Muskegon, Norton Shores, Traverse City, Muskegon Heights, Big Rapids, Cadillac, Ludington, Manistee and Petoskey.
| Area code | City/Town | County |
|---|---|---|
| 231 | Acme | Grand Traverse |
| 231 | Afton | Cheboygan |
| 231 | Alanson | Emmet |
| 231 | Alba | Antrim |
| 231 | Alden | Antrim |
| 231 | Arcadia | Manistee |
| 231 | Bailey | Muskegon |
| 231 | Baldwin | Lake |
| 231 | Bay Shore | Charlevoix |
| 231 | Bear Lake | Manistee |
| 231 | Beaver Island | Charlevoix |
| 231 | Bellaire | Antrim |
| 231 | Benzonia | Benzie |
| 231 | Beulah | Benzie |
| 231 | Big Rapids | Mecosta |
| 231 | Bitely | Newaygo |
| 231 | Boon | Wexford |
| 231 | Boyne City | Charlevoix |
| 231 | Boyne Falls | Charlevoix |
| 231 | Branch | Mason |
| 231 | Brethren | Manistee |
| 231 | Brohman | Newaygo |
| 231 | Brutus | Emmet |
| 231 | Buckley | Wexford |
| 231 | Burt Lake | Cheboygan |
| 231 | Cadillac | Wexford |
| 231 | Carp Lake | Emmet |
| 231 | Casnovia | Muskegon |
| 231 | Cedar | Leelanau |
| 231 | Central Lake | Antrim |
| 231 | Charlevoix | Charlevoix |
| 231 | Chase | Lake |
| 231 | Cheboygan | Cheboygan |
| 231 | Chippewa Lake | Mecosta |
| 231 | Conway | Emmet |
| 231 | Copemish | Manistee |
| 231 | Coral | Montcalm |
| 231 | Cross Village | Emmet |
| 231 | Custer | Mason |
| 231 | East Jordan | Charlevoix |
| 231 | Eastlake | Manistee |
| 231 | Eastport | Antrim |
| 231 | Elberta | Benzie |
| 231 | Elk Rapids | Antrim |
| 231 | Ellsworth | Antrim |
| 231 | Elmira | Otsego |
| 231 | Empire | Leelanau |
| 231 | Evart | Osceola |
| 231 | Falmouth | Missaukee |
| 231 | Fife Lake | Kalkaska |
| 231 | Filer City | Manistee |
| 231 | Fountain | Mason |
| 231 | Frankfort | Benzie |
| 231 | Free Soil | Mason |
| 231 | Fremont | Newaygo |
| 231 | Fruitport | Muskegon |
| 231 | Glen Arbor | Leelanau |
| 231 | Good Hart | Emmet |
| 231 | Gowen | Kent |
| 231 | Grant | Newaygo |
| 231 | Grawn | Grand Traverse |
| 231 | Greenville | Montcalm |
| 231 | Harbor Springs | Emmet |
| 231 | Harrietta | Wexford |
| 231 | Hart | Oceana |
| 231 | Hersey | Osceola |
| 231 | Hesperia | Oceana |
| 231 | Holton | Muskegon |
| 231 | Honor | Benzie |
| 231 | Howard City | Montcalm |
| 231 | Idlewild | Lake |
| 231 | Indian River | Cheboygan |
| 231 | Interlochen | Grand Traverse |
| 231 | Irons | Lake |
| 231 | Kaleva | Manistee |
| 231 | Kalkaska | Kalkaska |
| 231 | Kewadin | Antrim |
| 231 | Kingsley | Grand Traverse |
| 231 | Lake Ann | Benzie |
| 231 | Lake City | Missaukee |
| 231 | Lake Leelanau | Leelanau |
| 231 | Leland | Leelanau |
| 231 | Leroy | Osceola |
| 231 | Levering | Emmet |
| 231 | Ludington | Mason |
| 231 | Luther | Lake |
| 231 | Mackinaw City | Cheboygan |
| 231 | Mancelona | Antrim |
| 231 | Manistee | Manistee |
| 231 | Manton | Wexford |
| 231 | Maple City | Leelanau |
| 231 | Marion | Osceola |
| 231 | Mayfield | Grand Traverse |
| 231 | Mc Bain | Missaukee |
| 231 | Mears | Oceana |
| 231 | Mecosta | Mecosta |
| 231 | Merritt | Missaukee |
| 231 | Mesick | Wexford |
| 231 | Montague | Muskegon |
| 231 | Morley | Mecosta |
| 231 | Mullett Lake | Cheboygan |
| 231 | Muskegon | Muskegon |
| 231 | New Era | Oceana |
| 231 | Newaygo | Newaygo |
| 231 | Northport | Leelanau |
| 231 | Oden | Emmet |
| 231 | Old Mission | Grand Traverse |
| 231 | Omena | Leelanau |
| 231 | Onekama | Manistee |
| 231 | Paris | Mecosta |
| 231 | Pellston | Emmet |
| 231 | Pentwater | Oceana |
| 231 | Petoskey | Emmet |
| 231 | Pierson | Montcalm |
| 231 | Pointe Aux Pins | Mackinac |
| 231 | Rapid City | Kalkaska |
| 231 | Ravenna | Muskegon |
| 231 | Reed City | Osceola |
| 231 | Rodney | Mecosta |
| 231 | Rothbury | Oceana |
| 231 | Scottville | Mason |
| 231 | Sears | Osceola |
| 231 | Shelby | Oceana |
| 231 | South Boardman | Kalkaska |
| 231 | Stanwood | Mecosta |
| 231 | Suttons Bay | Leelanau |
| 231 | Sylvan Beach | Muskegon |
| 231 | Thompsonville | Benzie |
| 231 | Topinabee | Cheboygan |
| 231 | Traverse City | Grand Traverse |
| 231 | Trufant | Montcalm |
| 231 | Tustin | Osceola |
| 231 | Twin Lake | Muskegon |
| 231 | Walhalla | Mason |
| 231 | Walkerville | Oceana |
| 231 | Walloon Lake | Charlevoix |
| 231 | Wellston | Manistee |
| 231 | White Cloud | Newaygo |
| 231 | Whitehall | Muskegon |
| 231 | Williamsburg | Grand Traverse |
| 231 | Wolverine | Cheboygan |