[1][2][3] According to the preliminary report of 2021 Nepalese census, the population of the municipality is 36,591, the fifth highest in the district.

According to 2021 Nepal Census, Nijgadh has a population of 100,591 persons (18,006 males and 18,585 females) living in 7,931 individual households.

[4] At the time of the 2011 Nepal Census, the town had a population of 19,617 persons (9,528 male and 10,089 female) living in 3,982 individual households.

[6] They were replaced by Surath Puri and Som Maya Theeng of CPN (UML) in the 2022 Nepalese local elections, who serve currently in the posts.

[7] The town has been selected as a site for an international airport that could handle 15 million passengers and even accommodate the super-jumbo Airbus A380 after the first phase of construction.