With a population of around 1.311 billion, India ranks second on the list. Around 17 percent of the world’s population lives in India. The country has 3.28 km2 of land area, but the residents aren’t evenly distributed within it. Around 166 million people live in Uttar Pradesh, which is the most populated state in the country. The least populated state is Lakshadweep with only 60,000 residents.