| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Ayagaki, Oita (綾垣) | 879-4402 |
| Postal/ZIP Codes in Hijiu, Oita (日出生) | 879-4406 |
| Postal/ZIP Codes in Hoashi, Oita (帆足) | 879-4403 |
| Postal/ZIP Codes in Iwamuro, Oita (岩室) | 879-4405 |
| Postal/ZIP Codes in Kogo, Oita (古後) | 879-4523 |
| Postal/ZIP Codes in Mori, Oita (森) | 879-4404 |
| Postal/ZIP Codes in Okuma, Oita (大隈) | 879-4414 |
| Postal/ZIP Codes in Ota, Oita (小田) | 879-4411, 879-4521 |
| Postal/ZIP Codes in Others, Oita (その他) | 879-4400 |
| Postal/ZIP Codes in Tobata, Oita (戸畑) | 879-4331 |
| Postal/ZIP Codes in Tsukawaki, Oita (塚脇) | 879-4413 |
| Postal/ZIP Codes in Yamada, Oita (山田) | 879-4412 |
| Postal/ZIP Codes in Yamashita, Oita (山下) | 879-4522 |
| Postal/ZIP Codes in Yamaura, Oita (山浦) | 879-4732, 879-4332 |
| Postal/ZIP Codes in Yokkaichi, Oita (四日市) | 879-4401, 879-4301 |
| Postal/ZIP Codes in Zumari. Hanaga. Bokujo, Oita (泊里、花香、牧場) | 879-4332 |
| Postal Codes in Kusu | |
|---|---|
| Postal/ZIP Codes in Kokonoe (九重町) | |
| Postal/ZIP Codes in Kusu (玖珠町) | |