| Country | Poland (PL) |
| UN/LOCODE | SIZ |
| Name | Siewierz |
| Name Without Diacritics | Siewierz |
| Region | 24 |
| Function Code | --3----- |
| Function | Road |
| Status Code | RL (Recognised Location) |
| Date | 407 |
| Timezone | Europe/Warsaw |
| Location (UN Format) | 5028N 01914E |
| Latitude Longitude | 50.4666, 19.2303 |