There are 38 Districts in Bihar under 9 Divisions. West Champaran is the largest district by area covering 5,229 sq. km and Sheohar is the smallest district by area covering 443 sq.km. Patna, the capital city of Bihar situated in Patna District. Patna is also the largest city in Bihar with 1.5 million inhabitants. Click here to view and download Bihar district map
List of Districts in Bihar under Divisions
| No | Divisions | Districts |
| 1 | Bhagalpur | Bhagalpur and Banka |
| 2 | Darbhanga | Darbhanga, Madhubani, and Samastipur |
| 3 | Kosi | Saharsa, Madhepura, and Supaul |
| 4 | Magadh | Gaya, Nawada, Aurangabad, Jehanabad, and Arwal |
| 5 | Munger | Munger, Jamui, Khagaria, Lakhisarai, Begusarai, and Sheikhpura |
| 6 | Patna | Patna, Nalanda, Bhojpur, Rohtas, Buxar, and Kaimur |
| 7 | Purnea | Purnia, Katihar, Araria, and Kishanganj. |
| 8 | Saran | Saran, Siwan, and Gopalganj |
| 9 | Tirhut | West Champaran, East Champaran, Muzaffarpur, Sitamarhi, Sheohar, and Vaishali |
Download the List of Districts in Bihar
List of Districts in Bihar with Web address
| No. | Name of District | Head Quarters | Area** | Population* | Website |
| 1 | Araria | Araria | 2,829 | 2,811,569 | https://araria.nic.in/ |
| 2 | Arwal | Arwal | 637 | 699,000 | https://arwal.nic.in/ |
| 3 | Aurangabad | Aurangabad | 3,303 | 2,540,073 | https://aurangabad.gov.in/ |
| 4 | Banka | Banka | 3,018 | 2,034,763 | https://banka.nic.in/ |
| 5 | Begusarai | Begusarai | 1,917 | 2,970,541 | https://begusarai.nic.in/ |
| 6 | Bhagalpur | Bhagalpur | 2,569 | 3,037,766 | https://bhagalpur.nic.in/ |
| 7 | Bhojpur | Arrah | 2,473 | 2,728,407 | https://bhojpur.nic.in/ |
| 8 | Buxar | Buxar | 1,624 | 1,706,352 | https://buxar.nic.in/ |
| 9 | Darbhanga | Darbhanga | 2,278 | 3,937,385 | https://darbhanga.nic.in/ |
| 10 | East Champaran | Motihari | 3,969 | 5,099,371 | https://eastchamparan.nic.in/ |
| 11 | Gaya | Gaya | 4,978 | 4,391,418 | https://gaya.nic.in/ |
| 12 | Gopalganj | Gopalganj | 2,033 | 2,562,012 | https://gopalganj.nic.in/ |
| 13 | Jamui | Jamui | 3,099 | 1,760,405 | https://jamui.nic.in/ |
| 14 | Jehanabad | Jehanabad | 1,569 | 1,125,313 | https://jehanabad.nic.in/ |
| 15 | Khagaria | Khagaria | 1,486 | 1,666,886 | https://khagaria.nic.in/ |
| 16 | Kishanganj | Kishanganj | 1,884 | 1,690,400 | https://kishanganj.nic.in/ |
| 17 | Kaimur | Bhabua | 3,363 | 1,626,384 | https://kaimur.nic.in/ |
| 18 | Katihar | Katihar | 3,056 | 3,071,029 | https://katihar.nic.in/ |
| 19 | Lakhisarai | Lakhisarai | 1,229 | 1,000,912 | https://lakhisarai.nic.in/ |
| 20 | Madhubani | Madhubani | 3,501 | 4,487,379 | https://madhubani.nic.in/ |
| 21 | Munger | Munger | 1,419 | 1,367,765 | https://munger.nic.in/ |
| 22 | Madhepura | Madhepura | 1,787 | 2,001,762 | https://madhepura.nic.in/ |
| 23 | Muzaffarpur | Muzaffarpur | 3,173 | 4,801,062 | https://muzaffarpur.nic.in/ |
| 24 | Nalanda | Bihar Sharif | 2,354 | 2,877,653 | https://nalanda.nic.in/ |
| 25 | Nawada | Nawada | 2,492 | 2,219,146 | https://nawada.nic.in/ |
| 26 | Patna | Patna | 3,202 | 5,838,465 | https://patna.nic.in/ |
| 27 | Purnia | Purnia | 3,228 | 3,264,619 | https://purnea.nic.in/ |
| 28 | Rohtas | Sasaram | 3,850 | 2,959,918 | https://rohtas.nic.in/ |
| 29 | Saharsa | Saharsa | 1,702 | 1,900,661 | https://saharsa.nic.in/ |
| 30 | Samastipur | Samastipur | 2,905 | 4,261,566 | https://samastipur.nic.in/ |
| 31 | Sheohar | Sheohar | 443 | 656,916 | https://sheohar.nic.in/ |
| 32 | Sheikhpura | Sheikhpura | 689 | 634,927 | https://sheikhpura.nic.in/ |
| 33 | Saran | Chhapra | 2,641 | 3,951,862 | https://saran.nic.in/ |
| 34 | Sitamarhi | Dumra,Sitamarhi | 2,199 | 3,423,574 | https://sitamarhi.nic.in/ |
| 35 | Supaul | Supaul | 2,410 | 2,229,076 | https://supaul.nic.in/ |
| 36 | Siwan | Siwan | 2,219 | 3,330,464 | https://siwan.nic.in/ |
| 37 | Vaishali | Hajipur | 2,036 | 3,495,021 | https://vaishali.nic.in/ |
| 38 | West Champaran | Bettiah | 5,229 | 3,935,042 | https://westchamparan.nic.in/ |