Onicha Local Government Area (LGA) of Ebonyi State, Nigeria, has several district which all make use of different postal or zip codes.
Here are the postcodes for Onicha LGA:
Abaomege
| Location | Postcode |
| Anumocha | 491110 |
| Ebusirike | 491110 |
| Enyibuchiri | 491110 |
| Okaria | 491110 |
| Okworike | 491110 |
| Omege | 491110 |
Isu
| Location | Postcode |
| Umuosbasi | 471122 |
| Abbo | 471122 |
| Amuziii | 471122 |
| Umualaoke Umurlu | 471122 |
| Umudiweugo | 471122 |
| Umudurioke-Umueze-Umuorlu | 471122 |
| Umuezeala | 471122 |
| Umuezealaofor | 471122 |
| Umuezealarioha-Umugada | 471122 |
| Umunabala | 471122 |
| Umunnakara | 471122 |
| Umuobasi | 471122 |
| Umuopara | 471122 |
| Umuoparadim | 471122 |
| Umuoparaiheoma | 471122 |
| Umuora | 471122 |
| Umunika | 491106 |
| Agba | 491106 |
| Agbabor | 491106 |
| Agueke | 491106 |
| Amannator | 491106 |
| Isu-Achara | 491106 |
| Mbala Ukwu | 491106 |
| Mgbelaeze | 491106 |
| Obeagu | 491106 |
| Ojiegbe | 491106 |
| Aba Isu | 442103 |
| Amachi | 442103 |
| Amakarama | 442103 |
| Amukabi | 442103 |
| Iheosu | 442103 |
| Obieze | 442103 |
| Obomime | 442103 |
Onicha Town
| Location | Postcode |
| Umuhu | 462123 |
| Umuoma | 462123 |
| Eziama | 462123 |
| Omukwu | 462123 |
| Ubolukam | 462123 |
| Umuagbala | 462123 |
| Umuekekwene | 462123 |
| Umueleagwua | 462123 |
| Umuevu | 462123 |
| Ugwudiala | 491108 |
| Ugwuenu | 491108 |
| Umubo II | 491108 |
| Umuezikwu | 491108 |
| Umuobo I | 491108 |
| Amainyima I | 491108 |
| Ntika-Ntiabor | 491108 |
| Amainyima II | 491108 |
| Ogono-Onmuja | 491108 |
| Amajo-Ufueze | 491108 |
| Okuoma | 491108 |
| Amakporor | 491108 |
| Onyofia- | 491108 |
| Amananaator I | 491108 |
| Amananator II | 491108 |
| Amangwu | 491108 |
| Amaokwe | 491108 |
| Amata-Omirima | 491108 |
| Amutu | 491108 |
| Anike I | 491108 |
| Anike II | 491108 |
| Ezekporoke | 491108 |
| Eziga | 491108 |
| Isiama I | 491108 |
| Isiama II | 491108 |
Shiri
| Location | Postcode |
| Agbabi | 491107 |
| Amagu | 491107 |
| Amankalu | 491107 |
| Amaocha | 491107 |
| Amaokpara | 491107 |
| Isieke | 491107 |
| Isinkwor | 491107 |
| Iyiazu | 491107 |
| Mgoji | 491107 |
| Owom | 491107 |
| Ufuezokwu | 491107 |
| Umuafia | 491107 |
| Umuimam | 491107 |
| Umumgbala | 491107 |
| Umumgboke | 491107 |
| Umuorie | 491107 |
Ukawu
| Location | Postcode |
| Amakpuma | 491109 |
| Amofia | 491109 |
| Azueonyi-Sub-Village | 491109 |
| Ebulike | 491109 |
| Ishinkwor | 491109 |
| Ochege-Sub-Village | 491109 |
| Okuzu I | 491109 |
| Okuzu II | 491109 |
| Okuzu Ngu-Enyi | 491109 |