Biase Local Government Area (LGA) of Cross River State, Nigeria, has several locations which all have varying postal/zip codes.
Here are the postcodes for towns in Biase LGA
Ehom
| Location | Postcode |
| Ehom | 542107 |
| Ehom Central | 542107 |
| Ekpri | 542107 |
| Etono I | 542107 |
| Idoma | 542107 |
| Iko | 542107 |
| Iwuru Obio | 542107 |
| Ntan | 542107 |
Erei
| Location | Postcode |
| Ipene | 542112 |
| Obani Erei | 542112 |
| Umoubon | 542112 |
| Urugban | 542112 |
| Abanwam | 542112 |
| Afono | 542112 |
| Edu | 542112 |
| Egbor | 542112 |
| Etana | 542112 |
| Ibini | 542112 |
Umon
| Location | Postcode |
| Abana | 542108 |
| Ikot Utun | 542108 |
| Akpasip | 542108 |
| Inu-ranu | 542108 |
| Aniyem | 542108 |
| Utumua | 542108 |
| Ayaba Oji | 542108 |
| Bechei | 542108 |
| Berekpe | 542108 |
| Biekpe | 542108 |
| Bikekpe | 542108 |
| Ekot Ewo | 542108 |
| Idung Itu | 542108 |
| Ikot Abasi | 542108 |
| Ikot Obisame | 542108 |
| Ikot Oboaama | 542108 |
| Ikot Ogbandem | 542108 |
| Ikot Ogun | 542108 |
| Ikot Okpora | 542108 |
Egup-Ipa
| Location | Postcode |
| Asetoimo | 542109 |
| Itu Agwagune | 542109 |
| Asoke | 542109 |
| Okurike | 542109 |
| Abini Ajijia | 542109 |
| Ayimo | 542109 |
| Ugbem | 542109 |
| Abrikang | 542109 |
| Edodiesu | 542109 |
| Ukwop-Uyiere | 542109 |
| Adim Edodono | 542109 |
| Edodone Aboni | 542109 |
| Umari | 542109 |
| Adim Obioko | 542109 |
| Egip Urom | 542109 |
| Unoikengo | 542109 |
| Agwaguna Egbe | 542109 |
| Ekoho | 542109 |
| Agwaguna Emo | 542109 |
| Epefime | 542109 |
| Ahapai Adom | 542109 |
| Esuikongo | 542109 |
| Ahapia | 542109 |
| Etabi | 542109 |
| Akofbenyim | 542109 |
| Ibenabang I | 542109 |
| Akparavuni | 542109 |
| Ibenabang II | 542109 |
| Akpet Central | 542109 |
| Igbadara | 542109 |
| Akpet I | 542109 |
| Ijom Abayong | 542109 |
| Akugom | 542109 |
| Imasetbi | 542109 |
| Aradang | 542109 |
| Ina Missingo | 542109 |
| Abamba | 542109 |
| Abaribara | 542109 |