|Time zone||IST (UTC+5:30)|
It is the first developed town of the Siddharthnagar district (a.k.a. Naugarh). Before Naugarh (Sidharthnagar) was declared as a new district, the proposed name of the new district around Naugarh was 'Madhavnagar'.
The local municipal corporation tried to do everything possible for the development of Bansi. At that time this was an all-purpose hub the area covered by three districts Basti, Sant Kabir Nagar and Gorakhpur.
This town still faces a lot of challenge related to transportation, roads, water, electricity, education, employment & etc. though often efforts are made for improvement in these sectors.Since two to three years the people of Bansi faces huge challenges due to shortage of electricity supply this problem got exacerbated by the politics of uttar pradesh politician Mata Prasad Pandey. Even the citizens are not able to get 6 to 8 hours of uninterrupted supply that is mandated for villages also that is the biggest reason that migration from Bansi to other cities is increasing very rapidly & in future it will more likely to grow.
Bansi is lacking in terms of infrastructure as there is no good quality health facility & Education facility is available in the town. Although there are some state government owned schools & colleges like Tilak inter college,ratan sen inter & degree college & some private schools but they are not able to provide quality education. Bansi town is having DIET & JNV on its exterior which are good education provider but they have to cater the need of whole district so in reality no personal benefit to the people of bansi by these institution except some business growth due to demand by these institution. Bansi is not connected to railway network & huge demand for railway connectivity but the MP from this area Mr.Jagdambika Pal is not well committed to fulfill this demand of public,he raises this issue only in election time & promise each time for same but not no progress since many years. In recent years there is a demand for making a new district by carving out from siddharth nagar & some portion of santkabir nagar & basti with district head quarter Bansi but this demand may take several years to get fulfilled. Raja Jaipratap singh is the mla from bansi & belongs to BJP national party,although his sincere effort not able to develop to its potential.
Bansi is located at the bank of river Rapti at  It has an average elevation of 370 metres (1213 feet).
As of 2001[update] India census, Bansi had a population of 35,711. Males constitute 52% of the population and females 48%. Bansi has an average literacy rate of 54%, lower than the national average of 59.5%; with 61% of the males and 39% of females literate. 18% of the population is under 6 years of age. The current population of Bansi city is around 80000 and this city is famous for its educational hub in Siddharth Nagar district.Bansi is feel proud of having DIET,Jawahar Navodaya Vidyalay,Raja Ratan Sen Degree College & Intercollege,Mangal Bazar,Rani Ganj Market and 3 forts spread around the city.Presently Raja JaiPratap Singh is the member of vidhansabha from Bansi electorate,elected on Bhartiye Janata Party ticket.
- "Census of India 2001: Data from the 2001 Census, including cities, villages and towns (Provisional)". Census Commission of India. Archived from the original on 2004-06-16. Retrieved 2008-11-01.