Ido-Osi is a Local Government Area (LGA) in Ekiti State, Nigeria. There are several locations within the LGA which all make use of varying postal or zip codes.
Here are the postcodes for Ido Osi LGA:
IDO-EKITI
| Location | Postcode |
| Ayetoro Ekiti | 371101 |
| Igbole Ekiti | 371101 |
| Ilogbo Ekiti | 371101 |
| Osi Ekiti | 371101 |
| Usi Ekiti | 371101 |
IFAKI
| Location | Postcode |
| Igbira Camp | 371103 |
| Ipole | 371103 |
| Obaji | 371103 |
| Odo Oba-Aladesusi | 371103 |
| Okalawa | 371103 |
| Oke Ese | 371103 |
| Osi | 371103 |
| Temigbola | 371103 |
ORIN-EKITI
| Location | Postcode |
| Aaye Ekiti | 371102 |
| Ifisin-Ekiti | 371102 |
| Ilogun | 371102 |
| Odo-Ora | 371102 |
| Oke-Ora | 371102 |
| Ora-Ekiti | 371102 |