India is a country with more than 1.21 Billion populations. It is currently second largest populated country in the world after China. It is estimated that India would be single largest populated country in 2025 going ahead of People's Republic of China. The reason for increasing population is lack of family planning and education.
Below is a list of top 10 districts of India by population as per official figures of Census 2011. Details of 2001 are also given for information purpose along with current data.