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)^[1]	Area (km²)	Density (/km²) (2001)	Map
AR	Araria	Araria	2,811,569	2,124,831	2,829	751
AR	Arwal	Arwal	699,000	589,476	637	918
AU	Aurangabad	Aurangabad	2,540,073	2,004,960	3,303	607
BA	Banka	Banka	2,034,763	1,608,778	3,018	533
BE	Begusarai	Begusarai	2,970,541	2,342,989	1,917	1,222
BG	Bhagalpur	Bhagalpur	3,037,766	2,430,331	2,569	946
BJ	Bhojpur	Arrah	2,728,407	2,233,415	2,473	903
BU	Buxar	Buxar	1,706,352	1,403,462	1,624	864
DA	Darbhanga	Darbhanga	3,937,385	3,285,473	2,278	1,442
EC	East Champaran	Motihari	5,099,371	3,933,636	3,969	991
GA	Gaya	Gaya	4,391,418	3,464,983	4,978	696
GO	Gopalganj	Gopalganj	2,562,012	2,149,343	2,033	1,057
JA	Jamui	Jamui	1,760,405	1,397,474	3,099	451
JE	Jehanabad	Jehanabad	1,125,313	924,839^[2]	1,569	963
KH	Khagaria	Khagaria	1,666,886	1,276,677	1,486	859
KI	Kishanganj	Kishanganj	1,690,400	1,294,063	1,884	687
KM	Kaimur	Bhabua	1,626,384	1,284,575	3,363	382
KT	Katihar	Katihar	3,071,029	2,389,533	3,056	782
LA	Lakhisarai	Lakhisarai	1,000,912	801,173	1,229	652
MB	Madhubani	Madhubani	4,487,379	3,570,651	3,501	1,020
MG	Munger	Munger	1,367,765	1,135,499	1,419	800
MP	Madhepura	Madhepura	2,001,762	1,524,596	1,787	853
MZ	Muzaffarpur	Muzaffarpur	4,801,062	3,743,836	3,173	1,180
NL	Nalanda	Bihar Sharif	2,877,653	2,368,327	2,354	1,006
NW	Nawada	Nawada	2,219,146	1,809,425	2,492	726
PA	Patna	Patna	5,838,465	4,709,851	3,202	1,471
PU	Purnia	Purnia	3,264,619	2,540,788	3,228	787
RO	Rohtas	Sasaram	2,959,918	2,448,762	3,850	636
SH	Saharsa	Saharsa	1,900,661	1,506,418	1,702	885
SM	Samastipur	Samastipur	4,261,566	3,413,413	2,905	1,175
SO	Sheohar	Sheohar	656,916	514,288	443	1,161
SP	Sheikhpura	Sheikhpura	634,927	525,137	689	762
SR	Saran	Chhapra	3,951,862	3,251,474	2,641	1,231
ST	Sitamarhi	Dumra, Sitamarhi	3,423,574	2,669,887	2,199	1,214
SU	Supaul	Supaul	2,229,076	1,745,069	2,410	724
SW	Siwan	Siwan	3,330,464	2,708,840	2,219	1,221
VA	Vaishali	Hajipur	3,495,021	2,712,389	2,036	1,332
WC	West Champaran	Bettiah	3,935,042	3,043,044	5,229	582