| Locality | Postal Code |
|---|---|
| Dadu, Hengshan (大肚村) | 312002, 312003, 312303, 312304, 312305 |
| Fengtian, Hengshan (豐田村) | 312000 |
| Fengxiang, Hengshan (豐鄉村) | 312002 |
| Fuxing, Hengshan (福興村) | 312003 |
| Hengshan, Hengshan (橫山村) | 312001, 312002, 312301 |
| Lixing, Hengshan (力行村) | 312002, 312003 |
| Nanchang, Hengshan (南昌村) | 312004 |
| Neiwan, Hengshan (內灣村) | 312003 |
| Shakeng, Hengshan (沙坑村) | 312003 |
| Tianliao, Hengshan (田寮村) | 312001, 312302 |
| Xinxing, Hengshan (新興村) | 312002, 312003 |
| Postal Codes in Hsinchu county | |
|---|---|
| Zhudong (竹東鎮) | Zhubei (竹北市) |
| Xinfeng (新豐鄉) | Xinbu (新埔鎮) |
| Wufeng (五峰鄉) | Qionglin (芎林鄉) |
| Jianshi (尖石鄉) | Hukou (湖口鄉) |
| Hengshan (橫山鄉) | Guanxi (關西鎮) |
| Emei (峨眉鄉) | Beibu (北埔鄉) |
| Baoshan (寶山鄉) | |