| Division | Headquarters | Districts | District map of Bihar |
|---|---|---|---|
| Patna
|
Patna | Bhojpur, Buxar, Kaimur, Patna, Rohtas, Nalanda | 
|
| Magadh | Gaya | Arwal, Aurangabad, Gaya, Jehanabad, Nawada | |
| Saran | Chapra | Saran, Siwan , Gopalganj | |
| Tirhut | Muzaffarpur | East Champaran, Muzaffarpur, Sheohar, Sitamarhi, Vaishali, West Champaran | |
| Purnia | Purnia | Araria, Katihar, Kishanganj, Purnia | |
| Bhagalpur | Bhagalpur | Banka, Bhagalpur | |
| Darbhanga | Darbhanga | Darbhanga, Madhubani, Samastipura | |
| Kosi | Saharsa | Madhepura, Saharsa, Supaul | |
| Munger | Munger | Begusarai,Jamui, Khagaria, Munger, Lakhisarai, Sheikhpura |