| Locality | Post Code |
|---|---|
| San Juan de Oros, Santa Catalina | Y4655 XAE |
| San León, Santa Catalina | Y4655 XAO |
| Santa Catalina, Santa Catalina | Y4655 |
| Timón Cruz, Santa Catalina | Y4655 XAK |
| Tio Mayo, Santa Catalina | Y4653 XAD |
| Toquero, Santa Catalina | Y4653 XAJ |
| Yoscaba, Santa Catalina | Y4653 XAK |