Essien Udim is a Local Government Area of Akwa Ibom State, and one of the 31 local government areas of the State.
Essien Udim LGA is one of the Annang speaking LGA in Akwa Ibom State, Nigeria. Essien Udim was created out of the former Ikot Ekpene division.
Adiasim
All the locations within Adiasim use the same code:
| Location | Postcode |
| Adiasim Ambat | 530113 |
| Adiasim Ikot Ekon | 530113 |
| Adiasim Ikot Essiendot | 530113 |
| Adiasim Ikot Udo | 530113 |
| Adiosim Atai | 530113 |
| Ikot Ambut | 530113 |
| Ikot Ata Enim | 530113 |
| Ikot Eda | 530113 |
| Ikot Ndem | 530113 |
| Ikot Ukpong | 530113 |
| Ukana Nsasak | 530113 |
| Utu Ikot Ekang | 530113 |
Afaha Clan
Locations within Afaha Clan, Essien Udim LGA use the same code:
| Location | Postcode |
| Nsasak | 530106 |
| Nto Nsok | 530106 |
| Ikiot Akpan Essiet | 530106 |
| Ikiot Ebak | 530106 |
| Ikot Ada Uto | 530106 |
| Ikot Akpan Eka | 530106 |
| Ikot Eseh | 530106 |
| Ikot Obiokon | 530106 |
| Ikot Obong | 530106 |
| Ikot Ukpong-Offiong | 530106 |
| Iko Ekwa | 524101 |
| Ikot Afaha | 524101 |
| Ikot Udota | 524101 |
| Nditia | 524101 |
| Odio | 524101 |
| Ofriyo | 524101 |
| Okopedi Idung Udo | 524101 |
| Osiok | 524101 |
| Ekepene Afaha Eket | 524101 |
| Ekpene Ukpa | 524101 |
Ekpen Yongatai Clan
Locations within Ekpen Yongatai Clan use the same code:
| Location | Postcode |
| Ikot Udom | 530109 |
| Inyand | 530109 |
| Midim Atan | 530109 |
| Esen Owo | 530109 |
| Ntak Ekpenyang | 530109 |
| Ikot Akpan | 530109 |
| Nto Obio Akpan | 530109 |
| Ikot Asang | 530109 |
| Nto Osung | 530109 |
| Ikot Esifon | 530109 |
| Nto Udo | 530109 |
| Ikot Inyang Udoh | 530109 |
| Uruk Obong I | 530109 |
| Ikot Ntuen | 530109 |
| Uruk Obong II | 530109 |
| Ikot Obio Odok | 530109 |
| Utu Ekpenyang | 530109 |
| Ikot Ofong | 530109 |
| Ikot Osom | 530109 |
| Ikot Osung | 530109 |
| Ikot Uba | 530109 |
| Ikot Ubo | 530109 |
| Ikot Udo | 530109 |
| Ata Essien-Mkpatak | 530109 |
| Ekpenyong Atai I | 530109 |
| Ekpenyong Atai II | 530109 |
Ikpe Anang
Locations within Ikpe Anang use the same code:
| Location | Postcode |
| Ebe Ikpe | 530112 |
| Ekoi Ikpe | 530112 |
| Ibam Ikpe | 530112 |
| Ikot Abiat | 530112 |
| Ikot Ekpe | 530112 |
| Ikot Eside | 530112 |
| Ikpe Ekpene Oton | 530112 |
| Ikpe Ikot Akpan | 530112 |
| Ikpe Ikot Ntuen | 530112 |
| Ikpe Nung Inyang | 530112 |
| Mbiabet Ikpe | 530112 |
| Mbiabong Ikpe | 530112 |
| Oniong Ono | 530112 |
| Udo Ikpe | 530112 |
Odoro Ikot
Locations within Odoro Ikot use the same code:
| Location | Postcode |
| Ukana Mbak Ukot | 530111 |
| Ikot Utin | 530111 |
| Nto Akpan Oko | 530111 |
| Ukana Ikot Ntuen | 530111 |
| Ekpeyong Ufum | 530111 |
| Iduog Esimuk | 530111 |
| Ikot Andem | 530111 |
| Ikot Ebok | 530111 |
| Ikot Ekpenyong | 530111 |
| Ikot Ibanga | 530111 |
| Ikot Idem | 530111 |
| Ikot Ineme | 530111 |
| Ikot Okom | 530111 |
| Ikot Udom Obet | 530111 |
| Ikot Udu | 530111 |
| Ikot Uko | 530111 |
| Ikot Umo Essien | 530111 |
Okon Clan
Locations within Okon Clan, Essien Udim use the same code:
| City | Postcode |
| Ukana Mbak Ukot | 530111 |
| Ikot Utin | 530111 |
| Nto Akpan Oko | 530111 |
| Ukana Ikot Ntuen | 530111 |
| Ekpeyong Ufum | 530111 |
| Iduog Esimuk | 530111 |
| Ikot Andem | 530111 |
| Ikot Ebok | 530111 |
| Ikot Ekpenyong | 530111 |
| Ikot Ibanga | 530111 |
| Ikot Idem | 530111 |
| Ikot Ineme | 530111 |
| Ikot Okom | 530111 |
| Ikot Udom Obet | 530111 |
| Ikot Udu | 530111 |
| Ikot Uko | 530111 |
| Ikot Umo Essien | 530111 |
Ukana East
All locations within Ukana East use the same code:
| Location | Postcode |
| Iboho | 530108 |
| Uwak Eat | 530108 |
| Ikot Akpabin | 530108 |
| Ikot Akpan Esang | 530108 |
| Ikot Akpan Essien | 530108 |
| Ikot Akpan Ifia | 530108 |
| Ikot Akpan Inyang | 530108 |
| Ikot Ekon | 530108 |
| Ikot Esidomo | 530108 |
| Ikot Eso | 530108 |
| Ikot Essien | 530108 |
| Ikot Eta | 530108 |
| Ikot Nkwa | 530108 |
| Ikot Obong Edong | 530108 |
| Ikot Ofok | 530108 |
| Ikot Ofong | 530108 |
| Ikot Osom | 530108 |
Ukana West Clan
All the locations within Ukana West, Essien Udim, use the same code:
| Location | Postcode |
| Ikot Udo-Inam | 530107 |
| Ikot Ukpong Eto | 530107 |
| Ntak Ikot Akpan | 530107 |
| Onuk | 530107 |
| Onuk Ikot-Abia | 530107 |
| Ukana Ikot Ide | 530107 |
| Uwa West | 530107 |
| Ikot Otu | 530107 |
| Ikot Out | 530107 |
| Ikot Ude-Idim | 530107 |
| Ikot Udo Ekpat | 530107 |
| Ikot Udo Etim | 530107 |
| Akpa Ufong | 530107 |
| Atan Ikot-Okoro | 530107 |
| Ekpo | 530107 |
| Ikot afanga | 530107 |
| Ikot Akpabio | 530107 |
| Ikot Akpan Ntiia | 530107 |
| Ikot Ankan | 530107 |
| Ikot Ayara | 530107 |
| Ikot Edet | 530107 |
| Ikot Okuo Onuk | 530107 |
| Ikot Osom | 530107 |
