More than 50% of India's population is now 25 years or older, according to a latest survey.
People under the age of 25 years constitute 46.9% of the country's population, said recently released Sample Registration System 2018, prepared by the Registrar General and Census Commissioner of India.
The population under 25 years of age includes 47.4% male and 46.3% female.
However, in states like Bihar, Uttar Pradesh and Kerala, the population under this age bracket is marginally higher than the national average.
With the highest fertility rate of 3.2%, Bihar has the highest proportion of its population below 25 years of age at 57.2%.
Uttar Pradesh has 52.7% of its population under 25 years of age. It has the second-highest fertility rate in the country at 2.9%.
With a fertility rate of 1.7%, Kerala has 37.4% of its population aged below 25 years.
The fertility rate is measured on the basis of the average number of children per woman.
Due to a low fertility rate in urban areas, the population under the age of 25 years is less there as compared to rural areas.
Bihar has the highest birth rate at 26.2% and Andaman and Nicobar Islands the lowest at 11.2%. Chhattisgarh has the highest death rate at 8% and Delhi the lowest at 3.3%.
The birth rate is calculated per one thousand of the population.
The death rate in India has witnessed a significant decline over the last four decades from 14.9%in 1971 to 6.2% in 2018.
The decline has been steeper in rural areas. In the last decade, the death rate has declined at an all-India level from 7.3% to 6.2%.
The corresponding decline in rural areas is from 7.8% to 6.7% and in urban areas from 5.8% to 5.1%.
The birth rate is a crude measure of fertility of a population and a crucial determinant of population growth. India's birth rate has declined drastically over the last four decades from 36.9% in 1971 to 20.0% in 2018.
The rural-urban differential has also narrowed.
However, the birth rate has continued to be higher in rural areas compared to urban areas in the last four decades.
This story has been published from a wire agency feed without modifications to the text.