Ibaji Local Government Area in Kogi State uses postal codes is 271105.
Here are the postal codes for the towns and districts in Ibaji:
| Place/Area | Postal code |
| Aya | 271105 |
| Nokwa | 271105 |
| Onuabo | 271105 |
| Echango | 271105 |
| Obale | 271105 |
| Onyedega | 271105 |
| Echeno | 271105 |
| Obele | 271105 |
| Orofuanefe | 271105 |
| Efe | 271105 |
| Odakupu | 271105 |
| Ugbugbo | 271105 |
| Ejule | 271105 |
| Odeke | 271105 |
| Ugwata | 271105 |
| Ete | 271105 |
| Odomomo | 271105 |
| Ujeh | 271105 |
| Ibaji | 271105 |
| Ofanwa | 271105 |
| Unale | 271105 |
| Ibaoko | 271105 |
| Ofronla | 271105 |
| Ika | 271105 |
| Ogbagwu | 271105 |
| Ikenye | 271105 |
| Ogwu | 271105 |
| Ikola | 271105 |
| Ojila | 271105 |
| Alogwu | 271105 |
| Ikpogwu | 271105 |
| Ojueja | 271105 |
| Amabo | 271105 |
| Ikpoloko | 271105 |
| Okapanaji | 271105 |
| Ani-Ocha | 271105 |
| Inene | 271105 |
| Okwuonoko | 271105 |
| Aniocha II | 271105 |
| Iteti | 271105 |
| Olla | 271105 |
| Arrugo | 271105 |
| Iyano | 271105 |
| Oluknodu | 271105 |
| Adgwu | 271105 |
| Ajankoje | 271105 |
| Ajitata | 271105 |
| Ajmukoje | 271105 |
| Akene | 271105 |
| Akinia | 271105 |
| Akpalobe | 271105 |
| Akpanya | 271105 |
| Akpiola | 271105 |
| Akura | 271105 |
| Alakwa | 271105 |