| Country | Mexico (MX) |
| UN/LOCODE | SMI |
| Name | Isla San Marcos |
| Name Without Diacritics | Isla San Marcos |
| Region | BCS |
| Function Code | 1------- |
| Function | Port |
| Status Code | RL (Recognised Location) |
| Date | 501 |
| Timezone | America/Hermosillo |
| Location (UN Format) | 2713N 11206W |
| Latitude Longitude | 27.2195, -112.0701 |