| Locality | Post Code |
|---|---|
| Akagawa (胎内市) | 959-2661 |
| Akanecho (胎内市) | 959-2659 |
| Araihama (胎内市) | 959-2609 |
| Atsutazaka (胎内市) | 959-2823 |
| Egami (胎内市) | 959-2657 |
| Ejiri (胎内市) | 959-2605 |
| Funato (胎内市) | 959-2675 |
| Futabacho (胎内市) | 959-2628 |
| Hachiman (胎内市) | 959-2606 |
| Haguro (胎内市) | 959-2624 |
| Hanyama (胎内市) | 959-2625 |
| Hatta (胎内市) | 959-2672 |
| Higashihoncho (胎内市) | 959-2643 |
| Higashikawauchi (胎内市) | 959-2671 |
| Hirakida (胎内市) | 959-2614 |
| Hirakidaekimae (胎内市) | 959-2613 |
| Hiranedai (胎内市) | 959-2702 |
| Honcho (胎内市) | 959-2645 |
| Hongo (胎内市) | 959-2655 |
| Hongocho (胎内市) | 959-2654 |
| Horiguchi (胎内市) | 959-2714 |
| Hoshinomiyacho (胎内市) | 959-2636 |
| Iizumi (胎内市) | 959-2626 |
| Jimoto (胎内市) | 959-2607 |
| Juniten (胎内市) | 959-2619 |
| Kamijozuka (胎内市) | 959-2676 |