Onuimo Local Government Area in Imo State uses postal codes ranging from 470107 to 470110.
Here are the postal codes for the towns and districts in Onuimo:
Okwelle
| Location | Postcode |
| Alaike | 470109 |
| Ofeahia | 470109 |
| Oji ama | 470109 |
| Oji-Owerre | 470109 |
| Okoronkwu | 470109 |
| Umoma | 470109 |
| Umuagwo | 470109 |
| Umudufuebo | 470109 |
| Umudumoodu | 470109 |
| Umuegwala | 470109 |
| Umueze-Owerre | 470109 |
| Umuoko | 470109 |
| Umuokwara | 470109 |
| Umuoram | 470109 |
Umuna
| Location | Postcode |
| Diakuma | 470107 |
| Nzifoke | 470107 |
| Uhi | 470107 |
Umuduru
| Location | Postcode |
| Aboh | 470110 |
| Aro-Umuduru | 470110 |
| Ofahia | 470110 |
| Ofeabia | 470110 |
| Okohia | 470110 |
| Umuanumeze | 470110 |
| Umuokpara-Bobo | 470110 |
| Umuokparaiye | 470110 |
Okwe
| Location | Postcode |
| Ezelu | 470108 |
| Eziama | 470108 |
| Ezoama | 470108 |
| Owerre | 470108 |
| Umucheke | 470108 |