| Localité | Code postal |
|---|---|
| Adowkrom, Bia East | WC |
| Ahimakrom, Bia East | WC |
| Amanfukrom, Bia East | WC |
| Kawteigo, Bia East | WC |
| Kwesakrom, Bia East | WC |
| Sebebiaso, Bia East | WC |
| Codes postaux en Western North | |
|---|---|
| Suaman | Sefwi Wiawso |
| Sefwi Akontombra | Juabeso |
| Bodi | Bia West |
| Bia East | Aowin |