| S.No | Taluka Name | Total No. of Pincode |
|---|---|---|
| 1 | Nautan | 0 |
| 2 | Siwan | 27 |
| 3 | Barharia | 0 |
| 4 | Goriakothi | 0 |
| 5 | Lakri Nabiganj | 1 |
| 6 | Basantpur | 0 |
| 7 | Bhagwanpur Hat | 3 |
| 8 | Maharajganj | 0 |
| 9 | Pachrukhi | 0 |
| 10 | Hussainganj | 0 |
| 11 | Ziradei | 1 |
| 12 | Mairwa | 0 |
| 13 | Guthani | 0 |
| 14 | Darauli | 0 |
| 15 | Andar | 1 |
| 16 | Raghunathpur | 0 |
| 17 | Hasanpura | 0 |
| 18 | Daraundha | 0 |
| 19 | Siswan | 4 |