India – 1.37 Billion

The second most populous country in the world is India, with a total population of 1.37 billion. The size of the country has expanded substantially over the past 40 years, with an increase of approximately 181.5 million people between 2001 and 2011.

India's population equals to 17.71 of the world's total population, and the population density is extremely high(461 people per square kilometer). The majority of the population lives in large cities and urbanized areas. About 34.5% of India's population live in major cities such as Mumbai, Delhi and Bangalore. Mumbai, the capital of India, has a population of 12.5 million. The median age for India is 27.1 years.

As India's population grows, it is projected to surpass China to become the world's most populous country by 2024.