| Country | United States (US) |
| UN/LOCODE | INV |
| Name | Madisonville |
| Name Without Diacritics | Madisonville |
| Region | LA |
| Function Code | 1-3--6-- |
| Function | Port, Road, Multi-use Location |
| Status Code | RL (Recognised Location) |
| Date | 607 |
| Location (UN Format) | 3024N 09010W |
| Country | United States (US) |
| UN/LOCODE | INV |
| Name | Madisonville |
| Name Without Diacritics | Madisonville |
| Region | LA |
| Function Code | 1-3--6-- |
| Function | Port, Road, Multi-use Location |
| Status Code | RL (Recognised Location) |
| Date | 607 |
| Location (UN Format) | 3024N 09010W |