1991 Census of India
- Population trends for major religious groups in India (1991)
|Religious group||Population % 1991|
The 1991 census recognizes 1,576 classified "mother tongues". According to the 1991 census, 22 'languages' had more than a million native speakers, 50 had more than 100,000 and 114 had more than 10,000 native speakers. The remaining accounted for a total of 566,000 native speakers (out of a total of 838 million Indians in 1991). The number of Sanskrit speakers in India in 1991 census was 49,736.
- Census towns in 1991 census of India were 1,702.
- Jammu and Kashmir was excluded from Census-taking in 1991 due to Insurgency in Jammu and Kashmir. The number for J&K was derived by interpolation for the population of religious communities in the state.
- Census was not conducted in Assam in the previous census in 1981 due to separatist movements that time. The census data for Assam was done based on interpolation.
- Vijayanunni, M. (26–29 August 1998). "Planning for the 2001 Census of India based on the 1991 Census" (PDF). 18th Population Census Conference. Honolulu, Hawaii, USA: Association of National Census and Statistics Directors of America, Asia, and the Pacific. Archived from the original (PDF) on 19 November 2008. Retrieved 17 December 2014.
- Dev, Amiya (2010). "Literary Multilingualism II : Multilingualism in India". In Lisa Block de Behar, Paola Mildonian, Jean-Michel Djian, Djlel Kadir, Alfons Knauth, Dolores Romero Lopez & Marcio Orlando Seligmann-Silva. Comparative Literature : Sharing Knowledges for Preserving Cultural Diversity (PDF). Encyclopedia of Life Support Systems (EOLSS). 2. pp. 172–183. Developed under the Auspices of the UNESCO, EOLSS Publishers, Paris, France, . Retrieved 17 December 2014.
- "With current trends, it will take 220 years for India's Muslim population to equal Hindu numbers".
- Mallikarjun, B. (7 November 2001). "Languages of India according to 2001 Census". Languages in India. Retrieved 17 December 2014.
- "Where are the Sanskrit speakers?".
- "Census findings point to decade of rural distress".
- "Where Are India's 2011 Census Figures on Religion?".
- "Religion Census: A faithful count".
- "Muslims' growth rate much lower".