Darbhanga is the fifth largest city and municipal corporation in the state of Bihar in India, and is considered an important city in North Bihar. It se…Darbhanga is the fifth largest city and municipal corporation in the state of Bihar in India, and is considered an important city in North Bihar. It serves as the headquarters of the Darbhanga district and the Darbhanga division. It is held that the name Darbhanga has been derived from Dwar Banga or Dari – Banga, meaning the 'door of Bengal'.