Sanskrit is a scheduled language in the Eighth Schedule of the Indian Constitution, while Bodo, Dogri, and Maithili are unscheduled languages.

Santali is spoken by approximately 7.4 million people in India, making it the largest unscheduled language in the country.

Dogri is spoken in the Jammu region of Jammu and Kashmir, and is recognized as an official language in the state.

Maithili is spoken in the Mithila region of Bihar, and is recognized as an official language in the state.

Bodo is spoken in the Bodoland region of Assam, and is recognized as an official language in the state.

Santali is spoken in the Mayurbhanj district of Odisha, and is recognized as an official language in the state.

Santali is spoken in the Surguja district of Chhattisgarh, and is recognized as an official language in the state.

Santali is spoken in the Santhal Parganas region of Jharkhand, and is recognized as an official language in the state.

Santali is spoken in the Purulia district of West Bengal, and is recognized as an official language in the state.

Kokborok is spoken in the Tripura state of India, and is recognized as an official language in the state.

Adi is spoken in the Arunachal Pradesh state of India, and is recognized as an official language in the state.

Ao is spoken in the Nagaland state of India, and is recognized as an official language in the state.

Meitei is spoken in the Manipur state of India, and is recognized as an official language in the state.

Mizo is spoken in the Mizoram state of India, and is recognized as an official language in the state.

Lepcha is spoken in the Sikkim state of India, and is recognized as an official language in the state.