There are 5 subdivisions in Begusarai District.
| Subdivision | Blocks |
|---|---|
| Begusarai | 1. Begusarai
2.Barauni 3. Matihani 4. Birpur 5. Samho Akha Kurha |
| Balia | 1. Balia
2. Dandari 3.Sahebpur Kamal |
| Teghra | 1. Teghra
2. Bachhwara 3.Bhagwanpur 4.Mansoorchak |
| Manjhaul | 1. Cheriya Bariyarpur
2. Chhorahi 3. Khudabandpur |
| Bakhari | 1. Bakhari
2. Garhpura 3. Nawkothi |