Rajbiraj is a mid-sized municipality located in the south-eastern part of the Province No. 2 of Nepal. Rajbiraj is the district headquarters of Saptari and the eighth largest city of the province. The township design of Rajbiraj was accomplished in 1938 based on an influence from the Indian city of Jaipur - thus making it the first township in Nepal to receive urban planning. It was later declared a municipality in 1959. According to 2011 census, the city had a population of 69.803 and was the 33rd largest municipality in Nepal. The city area is spread over 55.64 km 2 and comprises 16 wards.
The town is named after the ancient temple Rajdevi, rebuilt Sansa Makawanpur in the 14th century. Rajbiraj significantly served politically active city in the modern history of Nepal and was the hometown to a number of icons of the nation. Rajbiraj under Saptari 2B Assembly constituency which elects a member of the provincial Assembly of the province 2 once every five years and is part of Saptari 2 constituency, which elects a Deputy every five years. Roads are the main mode of transport in the city, and also has the ability to connect air. The main trade routes in the capital city of Nepal Biratnagar is situated 78 km 48 miles East of the city, as well as the Indo-Nepalese border Kunauli is located 10 km 6.2 miles South to the city.
Rashtriya Janata Party Samba party Nepals Prasad Yadav and Sadhana JHA to conduct the current mayors and Deputy mayors of the city, according to the results of local elections held on 27 September 2018.