| Locality | Post Code |
|---|---|
| Asahigaoka (四街道市) | 284-0024 |
| Chiyoda (四街道市) | 284-0015 |
| Chuo (四街道市) | 284-0009 |
| Dainichi (四街道市) | 284-0001 |
| Ikehana (四街道市) | 284-0014 |
| Kamezaki (四街道市) | 284-0011 |
| Kayahashi (四街道市) | 284-0002 |
| Kuriyama (四街道市) | 284-0027 |
| Meiwa (四街道市) | 284-0043 |
| Minoricho (四街道市) | 284-0004 |
| Misora (四街道市) | 284-0023 |
| Monenosato (四街道市) | 284-0016 |
| Monoi (四街道市) | 284-0012 |
| Nabasama (四街道市) | 284-0034 |
| Nagaoka (四街道市) | 284-0021 |
| Nakadai (四街道市) | 284-0037 |
| Nakano (四街道市) | 284-0036 |
| Nariyama (四街道市) | 284-0031 |
| Onagi (四街道市) | 284-0042 |
| Others (四街道市) | 284-0000 |
| Roppogaoka (四街道市) | 284-0008 |
| Sachigaoka (四街道市) | 284-0025 |
| Satsukigaoka (四街道市) | 284-0007 |
| Shikawatashi (四街道市) | 284-0003 |
| Shimoshizu Shinden (四街道市) | 284-0006 |
| Takanodai (四街道市) | 284-0033 |