Nauhatta is a large village in Nauhatta Block in Saharsa District of Bihar state, India. It belongs to Kosi Division. It is located 20 km towards North from District headquarters Saharsa. 165 km from State capital Patna. It comes under Mahisi constituency. The village had a population of 25,347 of which 13,124 were male while 12,223 were females as per Population Census 2011.