Apart from this, a few speakers are also found in the states of Uttar Pradesh, Bihar[1][11] and in neighbour country Bangladesh[12][13] and Nepal.

[16] The speakers of Kurmali are spread over a vast region of East India, especially in fringe areas of West Bengal, Jharkhand and Odisha.

The Kurmi of West Bengal identify themselves as speakers of Kurmali, considering it part of their ethnic identity.

In Manbhum this [Kuṛmalī] language is principally spoken by people of the Kuṛmī caste, who are numerous in the districts of Chota Nagpur, and in the Orissa Tributary state of Mayurbhanja. ...

In the Orissa Tributary States, the Kuṛmī nearly all talk Bengali, although living in an Oriya speaking country.

Similarly, in the 1911 census, according to the Linguistic Survey of India and Deputy Commissioner of Ranchi the Panchpargania was noted as: [Panch Pargania] closely resembles the Kurmali Thar of Manbhum.

... Panch Pargania or Tamaria is really a composition of language formed of Bengali, Oriya and Bihari words and terminations.

Grierson in the early 20th century, as the language of the Kuṛmi community, who were in a transitional phase to Bengali after settling in Bengali-speaking regions, bordering Hindi and Odia-speaking areas.

Thus, it was commonly regarded as a variety of Bengali in the region, but Grierson (1903) classified Kurmali Thar (Thar means "style", i.e., the style of Kuṛmi vocabulary) and Panch Pargania within the Bihari group of languages as Eastern Magahi, based on its distinct structural features and vocabulary, which were shaped by substratal language, diverging from Bengali.

[16]: 296, 297 It is believed that the early form of the Kurmali language was spoken by Kudmi Mahato, a group that was one of the original homesteaders of Jharkhand (Manbhum region).

[31][c] Those ten communities include Bedia, Bagal, Dharua, Dom, Jolha, Kamar, Kumhar, Tanti, Nai, Ghasi, Karga, and Rautia.

[34][2] The language contributes to community identity in festivals like Bandna, Tusu, Karam and Jhumair, in which the songs are formatted in Kurmali.