Administrative divisions of Bihar

• Headquarters: Patna
• Number of Districts : 6
• Names of Districts : Patna, Nalanda, Bhojpur, Rohtas, Buxar and Kaimur.
• Population (2011) : 17,734,739

• Headquarters: Muzaffarpur
• Number of Districts : 6
• Names of Districts : West Champaran, East Champaran, Muzaffarpur, Sitamarhi, Sheohar and Vaishali.
• Population (2011) : 21,356,045

• Headquarters: Chhapra
• Number of Districts : 3
• Names of Districts : Saran, Siwan and Gopalganj.
• Population (2011) : 10,819,311

• Headquarters: Darbhanga
• Number of Districts : 3
• Names of Districts : Darbhanga, Madhubani[3][4]and Samastipur.
• Population (2011) : 15,652,799

• Headquarters: Saharsa
• Number of Districts : 3
• Names of Districts : Saharsa, Madhepura and Supaul.
• Population (2011) : 6,120,117

• Headquarters: Purnia
• Number of Districts : 4
• Names of Districts : Purnia, Katihar, Araria and Kishanganj.
• Population (2011) : 10,838,525

• Headquarters: Bhagalpur
• Number of Districts : 2
• Names of Districts : Bhagalpur and Banka
• Population (2011) : 5,061,565

• Headquarters: Munger
• Number of Districts : 6
• Names of Districts : Munger, Jamui, Khagaria, Lakhisarai, Begusarai and Sheikhpura.
• Population (2011) : 9,362,742

[5]

• Headquarters: Gaya
• Number of Districts : 5
• Names of Districts : Gaya, Nawada, Aurangabad, Jehanabad and Arwal
• Population (2011) : 10,931,018

Population data obtained from the sum of the populations of the districts.[6]

• Administration in Bihar
• Government of Bihar
• Districts of Bihar
• Divisions of India