Raiganj is a community development block that forms an administrative division in Raiganj subdivision of Uttar Dinajpur district in the Indian state of West Bengal. History Historically the western frontier of ancient Pundravardhana kingdom, bordering ancient Anga of Mahabharat fame, the Dinajpur area remained somewhat obscure in the major empires that held sway over the region and beyond till the rise of the Dinajpur Raj during the Mughal period. Some areas later forming a part of Uttar Dinajpur were parts of kingdoms in Nepal. Dinajpur district was constituted by the British in 1786, with a portion of the estate of Dinajpur Raj. Subsequent to the Permanent Settlement in 1793, the semi-independent Dinajpur Raj was further broken down and some of its tracts were transferred to the neighbouring British districts of Purnea, Malda, Rajshahi and Bogra. In 1947, the Radcliffe Line placed the Sadar and Thakurgaon subdivisions of Dinajpur district in East Pakistan. The Balurghat subdivision of Dinajpur district was reconstituted as West Dinajpur district in West Bengal. Raiganj subdivision was formed in 1948. In order to restore territorial links between northern and southern parts of West Bengal which had been snapped during the partition of Bengal, and on the recommendations of the States Reorganisation Commission a portion of the erstwhile Kishanganj subdivision comprising Goalpokhar, Islampur and Chopra thanas (police stations) and parts of Thakurganj thana, along with the adjacent parts of the erstwhile Gopalpur thana in Katihar subdivision were transferred from Purnea district in Bihar to West Bengal in 1956, and were formally incorporated into Raiganj subdivision in West Dinajpur. The township of Kishanganj and its entire municipal boundary remained within Bihar. Islampur subdivision was formed in March 1959. At the same time, the portion of Chopra PS lying to the north of the Mahananda river covering an area that now comprises Bidhannagar-1 gram panchayat, Bidhannagar-2 GP, Chathat-Bansgaon GP and the southern half of Phansidewa-Bansgaon Kismat GP in Darjeeling district, was transferred from West Dinajpur to the jurisdiction of Phansidewa PS in Darjeling district. With the introduction of the Community Development Programme in 1960–61, community development blocks were set up in West Dinajpur district. In 1992, West Dinajpur district was bifurcated and Uttar Dinajpur district was established. Geography Raiganj is located at . Uttar Dinajpur district has a flat topography and slopes gently from north to south. All rivers flow in that direction. Except for the eastern fringes of Chopra