Nonhar is a village of Rohtas district, Bihar, India. The village has a population of about 5992 of which 3190 are males while 2802 are females as per Population Census 2011. The village is the origin of the Thora River, an underground river. Nonhar presents the Indian Social Culture. It is quite a model village. It has a post office, has two temples, two ponds and three private schools.