Dewanganj Rural Municipality is one of the 12 municipalities in Sunsari District of Koshi Province. As per the 2021 census, the rural municipality has a total population of 39,030, comprising 19,488 males (49.9%) and 19,542 females (50.1%), with a literacy rate of 66.69%. Spanning 53.56 square kilometers, Dewanganj Rural Municipality exhibits the population density of 729 people per square kilometer. Administratively, it is divided into 7 wards.
According to the latest publicly available report of the Center for Education and Human Resource Development (CEHRD), Dewanganj has 39 schools. Of these, 10 are private and 27 are public. The breakdown includes 35 pre-schools, 39 basic schools, and 7 secondary schools. Among the secondary schools, 2 offer +2 programs.
Some of the popular schools within the region include Amar Singh Secondary School Sunsari, Krishna Secondary School, Janata Secondary School, Shree Secondary School, and Kantipur English Boarding School.