| Place | Post Code |
|---|---|
| Gbanou, Ouandja-Kotto | None |
| Kaga-Eyi Koyanga, Ouandja-Kotto | None |
| Kaouadja, Ouandja-Kotto | None |
| Kotto, Ouandja-Kotto | None |
| Ouandja, Ouandja-Kotto | None |
| Sam-Ouandja, Ouandja-Kotto | None |
| Yangou, Ouandja-Kotto | None |
| Yangou-Angouba, Ouandja-Kotto | None |
| Yangou-Bamada, Ouandja-Kotto | None |
| Yangou-Diamant, Ouandja-Kotto | None |
| Yangou-Samba, Ouandja-Kotto | None |
| Yangou-Wassa, Ouandja-Kotto | None |
| All postal codes in Ouadda | |
|---|---|
| Ouadda, Ouadda | |
| Ouandja-Kotto, Ouadda | |