| General Information about Area Code 231 | |
|---|---|
| Country | United States |
| State / Province / Territory | Michigan |
| Major City | Muskegon |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 231-874 | Wolverine | Cheboygan | Landline |
| 231-824 | Manton | Wexford | Landline |
| 231-274 | Traverse City | Grand Traverse | Wireless |
| 231-785 | Fountain | Mason | Landline |
| 231-766 | Whitehall | Muskegon | Landline |
| 231-864 | Bear Lake | Manistee | Landline |
| 231-836 | Evart | Osceola | Landline |
| 231-723 | Manistee | Manistee | Landline |
| 231-787 | White Cloud | Newaygo | Landline |
| 231-288 | Muskegon | Muskegon | Wireless |
| 231-432 | Leland | Leelanau | Wireless |
| 231-337 | Mc Bain | Missaukee | Landline |
| 231-331 | Alden | Antrim | Landline |
| 231-338 | Baldwin | Lake | Landline |
| 231-759 | Muskegon | Muskegon | Landline |
| 231-585 | Mancelona | Antrim | Landline |
| 231-597 | Cheboygan | Cheboygan | Landline |
| 231-526 | Harbor Springs | Emmet | Landline |
| 231-222 | East Jordan | Charlevoix | Landline |
| 231-853 | Ravenna | Muskegon | Landline |