| Location | Type | Area/District | City/LGA | State | Postcode |
|---|---|---|---|---|---|
| Onitsha Rd. | Urban | Asaokpuja | Aba | Abia | 450261 |
| Onucha Akairo Ave. | Urban | Umungasi | Aba | Abia | 450272 |
| Onukwurunto Ave. | Urban | Osusu Layout | Aba | Abia | 450271 |
| Onunka St. | Urban | Umungasi | Aba | Abia | 450272 |
| Onuoha St. | Urban | Asaokpuja | Aba | Abia | 450261 |
| Onwuka Ind. Est | Urban | Umungasi | Aba | Abia | 450272 |
| Onwukwe Ave. | Urban | Osusu Layout | Aba | Abia | 450271 |
| Onyeador Close | Urban | Aba Central | Aba | Abia | 450211 |
| Onyebuchi St. | Urban | Osusu Layout | Aba | Abia | 450271 |
| Onyeije St. | Urban | Abaukwu | Aba | Abia | 450251 |
| Onyeike Ave. | Urban | Umungasi | Aba | Abia | 450272 |
| Onyeike Ave. | Urban | Ovom | Aba | Abia | 450221 |
| Onyeike St. | Urban | Iheorji-Layou | Aba | Abia | 450241 |
| Onyekachi St. | Urban | Osusu Layout | Aba | Abia | 450271 |
| Onyekwere Ave. | Urban | Umungasi | Aba | Abia | 450272 |
| Onyemaechi St. | Urban | Iheorji-Layou | Aba | Abia | 450241 |
| Onyembi St. | Urban | Iheorji-Layou | Aba | Abia | 450241 |
| Onyenso St. | Urban | Osusu Layout | Aba | Abia | 450271 |
| Onyenweaku St. | Urban | Umungasi | Aba | Abia | 450272 |
| Onyeocha St. | Urban | Abaukwu | Aba | Abia | 450251 |
