India overtook China in April 2023 to become the most populous country in the world, as per the United Nations
By 2050, it's projected that the elderly population in India may surpass the number of children aged 0 to 14 years
The elderly population in India could reach 347 million by 2050, accounting for 20.8 per cent of the total population
Uttar Pradesh has the highest population (19.98 crores) in India and has a population density of 829 people per square km, making it the most populous country subdivision globally
Maharashtra is India's second most populous state, with a population of 11.24 crores and a density of 365 people per square km
Bihar's population was 10.41 crores according to the 2011 Census, with a population density of 1106 people per square km
Tamil Nadu, a southern state, had a population of 7.21 crores with a density of 555 people per square km
Rajasthan, the largest state by area in India, had a population of 6.86 crores and a population density of 200 people per square km