| Country | France (FR) |
| UN/LOCODE | HYU |
| Name | Seillonnaz |
| Name Without Diacritics | Seillonnaz |
| Region | 1 |
| Function Code | -----6-- |
| Function | Multi-use Location |
| Status Code | RL (Recognised Location) |
| Date | 1901 |
| Timezone | Europe/Paris |
| Location (UN Format) | 4548N 00529E |
| Latitude Longitude | 45.8069, 5.4893 |