Bihar (BR)
See also: Districts of Bihar| Code | District | Headquarters | Population (2011) | Area (km²) | Density(2011) (/km²) | Official website |
| AR | Araria | Araria | 2,806,200 | 2,829 | 992 | http://araria.bih.nic.in |
| AR | Arwal | Arwal | 699,563 | 4,839 | 1099 | http://arwal.bih.nic.in/ |
| AU | Aurangabad | Aurangabad | 2,511,243 | 3,303 | 760 | http://aurangabad.bih.nic.in |
| BA | Banka | Banka | 2,029,339 | 3,018 | 672 | http://banka.bih.nic.in |
| BE | Begusarai | Begusarai | 2,954,367 | 1,917 | 1,540 | http://begusarai.bih.nic.in |
| BG | Bhagalpur | Bhagalpur | 3,032,226 | 2,569 | 1,180 | http://bhagalpur.bih.nic.in |
| BJ | Bhojpur | Arrah | 2,720,155 | 2,473 | 1,136 | http://bhojpur.bih.nic.in |
| BU | Buxar | Buxar | 1,707,643 | 1,624 | 1,003 | http://buxar.bih.nic.in |
| DA | Darbhanga | Darbhanga | 3,921,971 | 2,278 | 1,721 | http://darbhanga.bih.nic.in |
| EC | East Champaran | Motihari | 5,082,868 | 3,969 | 1281 | http://eastchamparan.bih.nic.in |
| GA | Gaya | Gaya | 4,379,383 | 4,978 | 880 | http://gaya.bih.nic.in |
| GO | Gopalganj | Gopalganj | 2,558,037 | 2,033 | 1,258 | http://gopalganj.bih.nic.in |
| JA | Jamui | Jamui | 1,756,078 | 3,099 | 567 | http://jamui.bih.nic.in |
| JE | Jehanabad | Jehanabad | 1,124,176 | 1,569 | 1206 | http://Jehanabad.bih.nic.in |
| KH | Khagaria | Khagaria | 1,657,599 | 1,486 | 1,115 | http://khagaria.bih.nic.in |
| KI | Kishanganj | Kishanganj | 1,690,948 | 1,884 | 898 | http://kishanganj.bih.nic.in |
| KM | Kaimur | Bhabua | 1,626,900 | 3,363 | 488 | http://kaimur.bih.nic.in |
| KT | Katihar | Katihar | 3,068,149 | 3,056 | 1004 | http://katihar.bih.nic.in |
| LA | Lakhisarai | Lakhisarai | 1,000,717 | 1,229 | 815 | http://lakhisarai.bih.nic.in |
| MB | Madhubani | Madhubani | 4,476,044 | 3,501 | 1,279 | http://madhubani.bih.nic.in |
| MG | Munger | Munger | 1,359,054 | 1,419 | 958 | http://munger.bih.nic.in |
| MP | Madhepura | Madhepura | 1,994,618 | 1,787 | 1116 | http://madhepura.bih.nic.in |
| MZ | Muzaffarpur | Muzaffarpur | 4,778,610 | 3,173 | 1,506 | http://muzaffarpur.bih.nic.in |
| NL | Nalanda | Bihar Sharif | 2,872,523 | 2,354 | 1,220 | http://nalanda.bih.nic.in |
| NW | Nawada | Nawada | 2,216,653 | 2,492 | 889 | http://nawada.bih.nic.in |
| PA | Patna | Patna | 5,772,804 | 3,202 | 1,803 | http://patna.bih.nic.in |
| PU | Purnia | Purnia | 3,273,127 | 3,228 | 1014 | http://purnia.bih.nic.in |
| RO | Rohtas | Sasaram | 2,962,593 | 3,850 | 763 | http://rohtas.bih.nic.in |
| SH | Saharsa | Saharsa | 1,897,102 | 1,702 | 1125 | http://saharsa.bih.nic.in |
| SM | Samastipur | Samastipur | 4,254,782 | 2,905 | 1,465 | http://samastipur.bih.nic.in |
| SO | Sheohar | Sheohar | 656,916 | 443 | 1,882 | http://sheohar.bih.nic.in |
| SP | Sheikhpura | Sheikhpura | 634,927 | 689 | 922 | http://sheikhpura.bih.nic.in |
| SR | Saran | Chhapra | 3,943,098 | 2,641 | 1,493 | http://saran.bih.nic.in |
| ST | Sitamarhi | Sitamarhi | 3,419,622 | 2,199 | 1,491 | http://sitamarhi.bih.nic.in |
| SU | Supaul | Supaul | 2,228,397 | 2,410 | 919 | http://supaul.bih.nic.in |
| SW | Siwan | Siwan | 3,318,176 | 2,219 | 1,495 | http://siwan.bih.nic.in |
| VA | Vaishali (Akshay) | Hajipur | 3,495,249 | 2,036 | 1,717 | http://vaishali.bih.nic.in |
| WC | West Champaran | Bettiah | 3,922,780 | 5,229 | 750 | http://westchamparan.bih.nic.in |
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