Administratively Assam is divided into 9 regions and 38 districts:
Bhagalpur:
Banka , Bhagalpur
Darbhanga:
Begusarai , Darbhanga , Madhubani , Samastipur
Kosi:
Madhepura , Saharsa , Supaul
Magadh:
Arwal , Aurangabad , Gaya , Jehanabad , Nawada
Munger:
Jamui , Khagaria , Munger , Lakhisarai , Sheikhpura
Patna:
Bhojpur , Buxar , Kaimur , Patna , Rohtas , Nalanda
Purnia:
Araria , Katihar , Kishanganj , Purnia
Saran:
Gopalganj , Saran , Siwan
Tirhut:
East Champaran , Muzaffarpur , Sheohar , Sitamarhi , Vaishali , West Champaran
Bihar Map
Bihar and its neighbouring states Jharkhand , West Bengal , Uttar Pradesh and the Kingdom of Nepal