| Postal Code information | |
|---|---|
| Place | Nam Sơn |
| Post Code | 433391, 433392, 433393, 433394, 433395, 433396, 433397, 433398, 433399, 433400, 433401, 433402, 433403, 433404, 433405, 433406, 433407, 433408, 433409, 433410, 433411, 433412, 433413 |
| County | Nam Sơn |
| State | Đồng Bằng Sông Hồng |
| Time zone | Asia/Ho_Chi_Minh |