One of the twenty-three (23) Local Government Areas (LGAs) of Rivers State, Nigeria, is Ogba-Egbema-Ndoni. Omoku is the location of its headquarters.

Different postal or zip codes are used by different locations within the LGA.
The Etche postcodes are as follows:

Table of Contents

Ogba-Egbema

Location Postcode
Usomini 510103
Okpurukpula 510103
Okuku 510103
Okwuzu 510103
Omoku 510103
Onuesi -Ogu 510103
Osiakpu 510103
Uju 510103
Ukpazi 510103
Agah 510103
Ikiri 510103
Obrikom 510103
Akabuka 510103
Itu 510103
Obuburu 510103
Akputa Waterside 510103
Kreigani 510103
Ogbogu 510103
Alinso -Okenu 510103
Mgbede 510103
Ohali-Elu 510103
Ama 510103
Obagi 510103
Ohali-Usomini 510103
Eboaha 510103
Obakata 510103
Ohiauga 510103
Ede 510103
Obidi 510103
Okansu 510103
Egbema 510103
Obiebe 510103
Okposi 510103
Egboda 510103
Obieti 510103
Egita-Akabuta 510103
Obigbo 510103
Ekpe -Aggah 510103
Obihuru 510103
Ekpe -Mgbede 510103
Obiozumini-Obukegi 510103
Elehia 510103
Obite 510103
Elieta 510103
Oboh 510103
Erema 510103
Obokroha 510103
Ibewa 510103
Obosi 510103

Ndoni

Location Postcode
Umuorieke 510104
Utu 510104
Oboaso 510104
Odugili 510104
Ogbeogene 510104
Ogu 510104
Oniku 510104
Owajinobia 510104
Ugbaja 510104
Umuigwe 510104
Adiai – Obiofu 510104
Agwe 510104
Amuajie 510104
Ase – Imonita 510104
Ase-Azaga 510104
Isara 510104
Isiukwa 510104
Ndoni 510104