List of Sub Districts in Pashchim Champaran
| ID | States/UTs | Districts | SubDistricts |
|---|---|---|---|
| 1 | Bihar | Pashchim Champaran | Mainatanr |
| 2 | Bihar | Pashchim Champaran | Thakrahan |
| 3 | Bihar | Pashchim Champaran | Sikta |
| 4 | Bihar | Pashchim Champaran | Sidhaw |
| 5 | Bihar | Pashchim Champaran | Ramnagar |
| 6 | Bihar | Pashchim Champaran | Piprasi |
| 7 | Bihar | Pashchim Champaran | Nautan |
| 8 | Bihar | Pashchim Champaran | Narkatiaganj |
| 9 | Bihar | Pashchim Champaran | Majhaulia |
| 10 | Bihar | Pashchim Champaran | Bagaha |
| 11 | Bihar | Pashchim Champaran | Madhubani |
| 12 | Bihar | Pashchim Champaran | Lauriya |
| 13 | Bihar | Pashchim Champaran | Jogapatti |
| 14 | Bihar | Pashchim Champaran | Gaunaha |
| 15 | Bihar | Pashchim Champaran | Chanpatia |
| 16 | Bihar | Pashchim Champaran | Bhitaha |
| 17 | Bihar | Pashchim Champaran | Bettiah |
| 18 | Bihar | Pashchim Champaran | Bairia |