| Place | Post Code |
|---|---|
| 小見前新田 (Omimaeshinden, Niigata) | 959-3254 |
| 大島 (Oshima, Niigata) | 959-3241 |
| その他 (Others, Niigata) | 959-3200 |
| 沢 (Sawa, Niigata) | 959-3262 |
| 下川口 (Shimokawaguchi, Niigata) | 959-3221 |
| 下関 (Shimoseki, Niigata) | 959-3265 |
| 下土沢 (Shimotsuchizawa, Niigata) | 959-3242 |
| 勝蔵 (Shozo, Niigata) | 959-3273 |
| 蔵田島 (Sodashima, Niigata) | 959-3232 |
| 高田 (Takada, Niigata) | 959-3252 |
| 高瀬 (Takase, Niigata) | 959-3263 |
| 滝原 (Takihara, Niigata) | 959-3258 |
| 田麦千刈 (Tamugichigari, Niigata) | 959-3208 |
| 辰田新 (Tatsutashin, Niigata) | 959-3271 |
| 打上 (Uchiage, Niigata) | 959-3272 |
| 内須川 (Uchisugawa, Niigata) | 959-3275 |
| 上野 (Ueno, Niigata) | 959-3213 |
| 上野原 (Uenohara, Niigata) | 959-3216 |
| 上野新 (Uenoshin, Niigata) | 959-3214 |
| 上野山 (Uenoyama, Niigata) | 959-3257 |
| 若山 (Wakayama, Niigata) | 959-3212 |
| 蕨野 (Warabino, Niigata) | 959-3207 |
| 山本 (Yamamoto, Niigata) | 959-3244 |
| 八ツ口 (Yatsukuchi, Niigata) | 959-3227 |
| 湯沢 (Yusawa, Niigata) | 959-3261 |
| Postal Codes in Iwafune | |
|---|---|
| Awashimaura (粟島浦村) | |
| Sekikawa (関川村) | |