| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Tsuruketa, Kumamoto (鶴ケ田) | 861-3812 |
| Postal/ZIP Codes in Yamada, Kumamoto (山田) | 861-3547 |
| Postal/ZIP Codes in Yanagi, Kumamoto (柳) | 861-3936 |
| Postal/ZIP Codes in Yanaibaru, Kumamoto (柳井原) | 861-3903 |
| Postal/ZIP Codes in Yasukata, Kumamoto (安方) | 861-3833 |
| Postal/ZIP Codes in Yoneo, Kumamoto (米生) | 861-3806 |
| Postal/ZIP Codes in Yonesako, Kumamoto (米迫) | 861-3912 |
| Postal/ZIP Codes in Yunoki, Kumamoto (柚木) | 861-3534 |
| Postal/ZIP Codes in Zei, Kumamoto (勢井) | 861-3523 |