Bengali is the official language of West Bengal and is spoken by approximately 85% of the population.

Odia is the official language of Odisha and is spoken by approximately 80% of the population.

Assamese is the official language of Assam and is spoken by approximately 60% of the population.

Maithili is the official language of Bihar and is spoken by approximately 30% of the population.

Santali is the official language of Jharkhand and is spoken by approximately 20% of the population.

Chhattisgarhi is the official language of Chhattisgarh and is spoken by approximately 70% of the population.

Manipuri is the official language of Manipur and is spoken by approximately 60% of the population.

Mizo is the official language of Mizoram and is spoken by approximately 80% of the population.

Naga is the official language of Nagaland and is spoken by approximately 60% of the population.

Kokborok is the official language of Tripura and is spoken by approximately 30% of the population.

Adi is the official language of Arunachal Pradesh and is spoken by approximately 20% of the population.

Khasi is the official language of Meghalaya and is spoken by approximately 40% of the population.

Nepali is the official language of Sikkim and is spoken by approximately 60% of the population.

Bengali is the official language of West Bengal and is spoken by approximately 85% of the population.

Odia is the official language of Odisha and is spoken by approximately 80% of the population.