India
India is home to two major language families: Indo-Aryan (spoken by about 74% of the population) and Dravidian (spoken by 24% of the population). Other languages spoken in India come from the Austroasiatic and Sino-Tibetan language families. India has no national language. Hindi, with the largest number of speakers, is the official language of the government. English is used extensively in business and administration and has the status of a "subsidiary official language"; it is important in education, especially as a medium of higher education. Each state and union territory has one or more official languages, and the constitution recognises in particular 22 "scheduled languages".
Hindi Belt
The Hindi Belt or Hindi Desh, sometimes referred to as the Hindi-Urdu Region, is a linguistic region in north-central India where Hindi (and the various languages/dialects grouped under it) and Urdu are widely spoken. Hindi belt is sometimes also used to refer to nine Indian states whose official language is Hindi and have a Hindi-speaking majority, namely Bihar, Chhattisgarh, Haryana, Himachal Pradesh, Jharkhand, Madhya Pradesh, Rajasthan, Uttarakhand , Uttar Pradesh and National Capital Territory of Delhi.