| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Satsumori (いすみ市) | 298-0114 |
| Postal/ZIP Codes in Sawabe (いすみ市) | 298-0023 |
| Postal/ZIP Codes in Shakayatsu (いすみ市) | 298-0015 |
| Postal/ZIP Codes in Shima (いすみ市) | 298-0121 |
| Postal/ZIP Codes in Shimobuse (いすみ市) | 298-0017 |
| Postal/ZIP Codes in Shimohara (いすみ市) | 298-0027 |
| Postal/ZIP Codes in Shoryuji (いすみ市) | 298-0116 |
| Postal/ZIP Codes in Sugaya (いすみ市) | 298-0106 |
| Postal/ZIP Codes in Takadani (いすみ市) | 298-0021 |
| Postal/ZIP Codes in Wakayama (いすみ市) | 298-0001 |
| Postal/ZIP Codes in Yamada (いすみ市) | 298-0025 |
| Postal/ZIP Codes in Yamasa (いすみ市) | 298-0124 |
| Postal/ZIP Codes in Yaotome (いすみ市) | 298-0132 |
| Postal/ZIP Codes in Oharamogamidai (いすみ市) | 298-0006 |