[15] In 2020, Kamatapur Autonomous Council has been created for socio-economic development and political rights of Koch-Rajbongshi community residing in Assam.

[13] The Rajbanshi (literal meaning: of the royal lineage) community gave itself this name after 1891 following a movement to distance itself from an ethnic identity and acquire the higher social status of Kshatriya Hindu varna instead.

[26][27] Starting from 1872 to 1891, in a series of social movements,[28] a section of Koch who were at tribal or semi-tribal form in present North Bengal and Western Assam in an effort to promote themselves up the caste hierarchy tried to dissociate themselves from their ethnic identity by describing themselves as Rajbanshi (of the royal lineage).

[29] This attempt of social upliftment was a reaction against the ill treatment and humiliation faced by the community from the caste Hindus who referred to the Koch as mleccha or barbarians.

[35] To justify this, the group collected reference from Hindu religious text such as the Kalika Purana, Yogini Tantra etc[36] and created legends that they originally belonged to the kshatriya varna but left their homeland in the fear of annihilation by the brahmin sage Parashurama and took refuge in Paundradesh (currently in Northern bengal and Rangpur division of Bangladesh) and later came to be known as Bhanga Kshatriyas.

to replace the older traditional surnames like Sarkar, Ghosh, Das or Mandal[44] and the Kshatriya status was granted in the final report of 1911 census.

[49] Today the Koch-Rajbongshis are found throughout North Bengal, particularly in the Dooars, as well as parts of Lower Assam, northern Bangladesh (Rangpur Division), the Terai of eastern Nepal and Bihar, and Bhutan.

[50] Some writers suggest that the Rajbanshi people constitute from different ethnic groups[51][52][53] who underwent Sankritisation to reach the present form and in the process abandoned their original Tibeto-burman tongue to be replaced by the Indo-Aryan languages.

[54] There exist Rajbanshi people in South Bengal districts of Midnapur, 24 Paraganas, Hoogly and Nadia who might not belong to the same ethnic stock.

[55][56] In 1937, various members of the Rajbanshi Kshatriya Samiti were elected to the Bengal Legislative Council from Rangpur, Dinajpur, Malda, and Jalpaiguri.

However, the reservations provided to them also increased conflict within organisations representing Scheduled Castes, and many leaders of the Kshatriya Samiti left for the Congress party, while much of the masses were drawn to the Communists.

[58] According to a 2019 research, the Koch Rajbongshi community has an oral tradition of agriculture, dance, music, medical practices, song, the building of house, culture, and language.

The main musical forms of Koch-Rajbongshi culture are Bhawaiyya, Chatka, Chorchunni, Palatia, Lahankari, Tukkhya, Bishohora Pala among many others.