Union Bank Of India is in Follwing Districts in Bihar State

Araria
Arwal
Aurangabad
Aurangabad - Bihar
Banka
Begusarai
Bhagalpur
Bhojpur
Buxar
Champaran
Darbhanga
East Champaran
Gaya
Gopal Ganj
Gopalganj
Goplaganj
Jamui
Jaunpur
Jehanabad
Katihar
Khagaria
Kishanganj
Lakhisarai
Machhuatoli
Madhepura
Madhubani
Munger
Muzaffapur
Muzaffarpur
Nalanda
Nawada
Paschimi Champaran
Patna
Purbi Champaran
Purnea
Purnia
Ranchi
Rohtas
Saharsa
Samastipur
Samstipur
Saran
Sheohar
Sitamarhi
Siwan
Supaul
Vaishali
West Champaran