Nijgadh Municipality is one of the 16 municipalities in Bara District of Madhesh Province. As per the 2021 census, the municipality has a total population of 37,687, comprising 18,446 males (48.9%) and 19,241 females (51.1%), with a literacy rate of 73.81%. Spanning 289.43 square kilometers, Nijgadh Municipality exhibits the population density of 130 people per square kilometer. Administratively, it is divided into 13 wards.
According to the latest publicly available report of the Center for Education and Human Resource Development (CEHRD), Nijgadh has 34 schools. Of these, 8 are private and 26 are public. The breakdown includes 27 pre-schools, 34 basic schools, and 10 secondary schools. Among the secondary schools, 4 offer +2 programs.
Some of the popular schools within the municipal area include Gauri Shankar Secondary School, Vidhya Sagar Boarding Secondary School, Gauri Shankar Secondary School Bara, Holy Angels English Boarding Secondary School, and Bakaiya Thakur Secondary School.