| All postal codes in Udi |
| Abia, Udi |
| Abor, Udi |
| Affa, Udi |
| Agbudu, Udi |
| Akpakwume, Udi |
| Amokwe, Udi |
| Ebe, Udi |
| Egede, Udi |
| Eke, Udi |
| Nachi, Udi |
| Ngwo, Udi |
| Nsude, Udi |
| Nzue, Udi |
| Obinagu, Udi |
| Obioma, Udi |
| Oghu, Udi |
| Okpatu, Udi |
| Owhum, Udi |
| Udi, Udi |
| Ukana, Udi |
| Umuabi, Udi |
| Umuaga, Udi |
| Umulumgbe, Udi |
| Umuoka, Udi |