List of districts in Bihar

Bihar, a state of India, has currently thirty-eight administrative districts.

A district of an Indian state is an administrative geographical unit, headed by a district magistrate or a deputy commissioner, an officer belonging to the Indian Administrative Service. The district magistrate or the deputy commissioner is assisted by a number of officials belonging to different wings of the administrative services of the state.

A superintendent of Police, an officer belonging to Indian Police Service is entrusted with the responsibility of maintaining law and order and related issues.

3 to 5 districts comprise to form a division(प्रमंडल). Each district is divided into  Sub-division(अनुमंडल), which are further sub-divided into C.D. Block(प्रखण्ड)

Summary
 Code District Headquarters Population (2011) Population (2001) Area (km²) Density (/km²)(2001) Map	AR  Araria Araria 2,811,569 2,124,831 2,829 751150px|center 	 AR Arwal Arwal 699,000  589,476 637 918150px|center	AU Aurangabad Aurangabad 2,540,073  2,004,960 3,303 607150px|center	BA Banka Banka 2,034,763 1,608,778 3,018 533150px|center	BE Begusarai Begusarai 2,970,541 2,342,989 1,917 1,222150px|center	BG Bhagalpur Bhagalpur 3,037,766 2,430,331 2,569 946150px|center	BJBhojpur Arrah 2,728,407 2,233,415 2,473 903150px|center	BU Buxar Buxar 1,706,352 1,403,462 1,624 864150px|center	DA Darbhanga Darbhanga 3,937,385 3,285,473 2,278 1,442150px|center	EC East Champaran Motihari 5,099,371 3,933,636 3,969 991150px|center	GA Gaya Gaya 4,391,418 3,464,983 4,978 696150px|center	GO Gopalganj Gopalganj 2,562,012 2,149,343 2,033 1,057150px|center	JA Jamui Jamui 1,760,405  1,397,474 3,099 451150px|center	JE Jehanabad Jehanabad 1,125,313 924,839 1,569 963150px|center	KH Khagaria Khagaria 1,666,886  1,276,677 1,486 859150px|center	KI Kishanganj Kishanganj 1,690,400  1,294,063 1,884 687150px|center	KM Kaimur Bhabua 1,626,384 1,284,575 3,363 382150px|center	KT Katihar Katihar 3,071,029 2,389,533 3,056 782150px|center	LA Lakhisarai Lakhisarai 1,000,912  801,173 1,229 652150px|center	MB Madhubani Madhubani 4,487,379 3,570,651 3,501 1,020150px|center	MG Munger Munger 1,367,765  1,135,499 1,419 800150px|center	MP Madhepura Madhepura 2,001,762 1,524,596 1,787 853150px|center	MZ Muzaffarpur Muzaffarpur 4,801,062 3,743,836 3,173 1,180150px|center	NL Nalanda Bihar Sharif 2,877,653 2,368,327 2,354 1,006150px|center	NW Nawada Nawada 2,219,146 1,809,425 2,492 726150px|center	PA Patna Patna 5,838,465 4,709,851 3,202 1,471150px|center	PU Purnia Purnia 3,264,619 2,540,788 3,228 787150px|center	RO Rohtas Sasaram 2,959,918 2,448,762 3,850 636150px|center	SH Saharsa Saharsa 1,900,661  1,506,418 1,702 885150px|center	SM Samastipur Samastipur 4,261,566 3,413,413 2,905 1,175150px|center	SO Sheohar Sheohar 656,916  514,288 443 1,161150px|center	SP Sheikhpura Sheikhpura 634,927  525,137 689 762150px|center	SR Saran Chhapra 3,951,862 3,251,474 2,641 1,231150px|center	ST Sitamarhi Dumra, Sitamarhi3,423,574 2,669,887 2,199 1,214150px|center	SU Supaul Supaul 2,229,076 1,745,069 2,410 724150px|center	SW Siwan Siwan 3,330,464 2,708,840 2,219 1,221150px|center	VA Vaishali Hajipur 3,495,021 2,712,389 2,036 1,332150px|center	WC West Champaran Bettiah 3,935,042 3,043,044 5,229 582150px|center

References

Other websites
http://districts.nic.in/disdetails.aspx?str_state=Ymg= 
  Bihar Districts Information Portal  bihar
http://www.biharspider.com/resources/2437-Districts-Bihar-Names.aspx 

district