| Country | Portugal (PT) |
| UN/LOCODE | ALT |
| Name | Alter do Ch„o |
| Name Without Diacritics | Alter do Chao |
| Region | 12 |
| Function Code | --3----- |
| Function | Road |
| Status Code | RN (Request From National Source For Domestic Locations) |
| Date | 401 |
| Timezone | Europe/Lisbon |
| Location (UN Format) | 3912N 00740W |
| Latitude Longitude | 39.1974, -7.6589 |