Tamil Nadu is the seventh most populous state in India with a population of 72,138,958 (5.96% of India's population; census 2011 fig.). It is the seventh most densely populated state in India with a population density of 555 persons per square kilometre as of 2011, having increased from 429 in 1991, significantly higher than the Indian average of 382 persons per square kilometre. 44% of the state's population live in urban areas, the highest among large states in India.
Tamil Nadu's population grew by 15.6% between 2001 and 2011, the sixth lowest rate for that period amongst populous states (states whose population exceeded 20 million in 2011). Although its decadal rate of population growth has declined since 1971, the population growth during the last decade (2001–2011) has increased.The state has registered the lowest fertiliy rate along with Andhra Pradesh and Goa in India in year 2005–06 with 1.8 children born for each woman, lower than required for population sustainability.
|Religions in Tamil Nadu|
Hinduism is followed by the majority of the people. The distribution of population based on their faith, as of the 2001 census, is shown in the bar graph above. Hinduism is the dominant religion has a higher percentage of adherents in Tamil Nadu (88%) when compared to other states. Christianity, though a minority, has the highest population in absolute numbers when compared to other states. Scheduled castes and Scheduled tribes comprise 19% and 1% of the population respectively. Tamil is the official and the principal spoken language of the state. As of the 2001 Census, Tamil is spoken by 89.00% of the population followed by Telugu at 5.66%, Kannada at 2.0%, Urdu at 1.51% and Malayalam at 0.59%.