| Locality | Postal Code |
|---|---|
| Emuta (臼杵市) | 875-0023 |
| Fujikawachi (臼杵市) | 875-0081 |
| Fukae (臼杵市) | 875-0031 |
| Fukata (臼杵市) | 875-0064 |
| Fukura (臼杵市) | 875-0053 |
| Higashikono (臼杵市) | 875-0076 |
| Ichihama (臼杵市) | 875-0052 |
| Ieno (臼杵市) | 875-0065 |
| Imura (臼杵市) | 875-0083 |
| Inada (臼杵市) | 875-0082 |
| Itachiya (臼杵市) | 875-0034 |
| Kaizoe (臼杵市) | 875-0042 |
| Kakidaki (臼杵市) | 875-0073 |
| Kazanashi (臼杵市) | 875-0032 |
| Kugiono (臼杵市) | 875-0070 |
| Maeda (臼杵市) | 875-0061 |
| Mochizuki (臼杵市) | 875-0063 |
| Nakao (臼杵市) | 875-0075 |
| Nakatsura (臼杵市) | 875-0013 |
| Nakausuki (臼杵市) | 875-0072 |
| Nioza (臼杵市) | 875-0043 |
| Noda (臼杵市) | 875-0062 |
| Notsumachi Akiyama (臼杵市) | 875-0221 |
| Notsumachi Chizuka (臼杵市) | 875-0231 |
| Notsumachi Fujiono (臼杵市) | 875-0235 |
| Notsumachi Fukuragi (臼杵市) | 875-0214 |