| Country | Portugal (PT) |
| UN/LOCODE | SEI |
| Name | Seixal |
| Name Without Diacritics | Seixal |
| Region | 15 |
| Function Code | -23----- |
| Function | Rail, Road |
| Status Code | RL (Recognised Location) |
| Date | 401 |
| Timezone | Europe/Lisbon |
| Location (UN Format) | 3838N 00906W |
| Latitude Longitude | 39.2603, -9.3232 |