UCO Bank is in Follwing Districts in Bihar State

Araria
Arwal
Aurangabad
Banka
Begulsarai
Begusarai
Bhagalpur
Bhojpur
Buxar
Dalsingsarai
Darbhanga
Gaya
Gaya Bihar
Gopalganj
Hajipur
Jamui
Jehanabad
Jhajha - Bihar
Katihar
Khagaria
Khagaria - Bihar
Kishanganj
Lakhisarai
Madhepura
Madhubani
Munger
Muzaffarpur
Nalanda
Paschimi Champaran
Patna
Purbi Champaran
Purnea
Purnia
Rohtas
Saharsa - Bihar
Sahebganj
Samastipur
Saran
Sheikhpura
Sheohar
Sitamarhi
Siwan
Supaul
Vaishali