List of districts in Bihar

No.	Name of District	Area (sq km)	Population	Name of Head Quarters
1	Araria	2,829	28,11,569	Araria
2	Arwal	637	6,99,000	Arwal
3	Aurangabad	3,303	25,40,073	Aurangabad
4	Banka	3,018	20,34,763	Banka
5	Begusarai	1,917	29,70,541	Begusarai
6	Bhagalpur	2,569	30,37,766	Bhagalpur
7	Bhojpur	2,473	27,28,407	Arrah
8	Buxar	1,624	17,06,352	Buxar
9	Darbhanga	2,278	39,37,385	Darbhanga
10	East Champaran	3,969	50,99,371	Motihari
11	Gaya	4,978	43,91,418	Gaya
12	Gopalganj	2,033	25,62,012	Gopalganj
13	Jamui	3,099	17,60,405	Jamui
14	Jehanabad	1,569	11,25,313	Jehanabad
15	Khagaria	1,486	16,66,886	Khagaria
16	Kishanganj	1,884	16,90,400	Kishanganj
17	Kaimur	3,363	16,26,384	Bhabua
18	Katihar	3,056	30,71,029	Katihar
19	Lakhisarai	1,229	10,00,912	Lakhisarai
20	Madhubani	3,501	44,87,379	Madhubani
21	Munger	1,419	13,67,765	Munger
22	Madhepura	1,787	20,01,762	Madhepura
23	Muzaffarpur	3,173	48,01,062	Muzaffarpur
24	Nalanda	2,354	28,77,653	Bihar Sharif
25	Nawada	2,492	22,19,146	Nawada
26	Patna	3,202	58,38,465	Patna
27	Purnia	3,228	32,64,619	Purnia
28	Rohtas	3,850	29,59,918	Sasaram
29	Saharsa	1,702	19,00,661	Saharsa
30	Samastipur	2,905	42,61,566	Samastipur
31	Sheohar	443	6,56,916	Sheohar
32	Sheikhpura	689	6,34,927	Sheikhpura
33	Saran	2,641	39,51,862	Chhapra
34	Sitamarhi	2,199	34,23,574	Dumra,Sitamarhi
35	Supaul	2,410	22,29,076	Supaul
36	Siwan	2,219	33,30,464	Siwan
37	Vaishali	2,036	34,95,021	Hajipur
38	West Champaran	5,229	39,35,042	Bettiah