| Locality | Post Code |
|---|---|
| Hokkitsumachi Kamihakoda (渋川市) | 377-0052 |
| Hokkitsumachi Kaminamuro (渋川市) | 377-0055 |
| Hokkitsumachi Komuro (渋川市) | 377-0065 |
| Hokkitsumachi Makabe (渋川市) | 377-0062 |
| Hokkitsumachi Shimohakoda (渋川市) | 377-0061 |
| Hokkitsumachi Shimonamuro (渋川市) | 377-0054 |
| Ikahomachi Ikaho (渋川市) | 377-0102 |
| Ikahomachi Mizusawa (渋川市) | 377-0103 |
| Ikahomachi Yunakago (渋川市) | 377-0101 |
| Ishihara (渋川市) | 377-0007 |
| Kamishiroi (渋川市) | 377-0201 |
| Kanai (渋川市) | 377-0027 |
| Kawashima (渋川市) | 377-0025 |
| Kitamoku (渋川市) | 377-0205 |
| Miyukida (渋川市) | 377-0006 |
| Murakami (渋川市) | 377-0311 |
| Nakago (渋川市) | 377-0202 |
| Nakamura (渋川市) | 377-0002 |
| Nammoku (渋川市) | 377-0026 |
| Onoko (渋川市) | 377-0312 |
| Others (渋川市) | 377-0000 |
| Shibukawa (渋川市) | 377-0008 |
| Shiroi (渋川市) | 377-0204 |
| Ubashima (渋川市) | 377-0024 |
| Yagihara (渋川市) | 377-0003 |
| Yokobori (渋川市) | 377-0206 |