| Country | United States (US) |
| UN/LOCODE | IIM |
| Name | Williamston |
| Name Without Diacritics | Williamston |
| Region | MI |
| Function Code | 123--6-- |
| Function | Port, Rail, Road, Multi-use Location |
| Status Code | RL (Recognised Location) |
| Date | 701 |
| Location (UN Format) | 4241N 08417W |