17 August 2010
1,340,764,245. Without some type of unit, this number is nonsense. The unit is people, expected population. Of two countries. Each. Based on current trends, on August 18, 2025, the population of India will catch up to the population of China, at 1.34 billion people. China's population growth is slowing, partly due to the one-child policy, and will eventually start to decline. India's population has been growing steadily. The numbers above are my own, from curve fits (see right) to world bank data. They don't quite agree with the numbers from real demographers, who, I'm sure, use better methods than me. Most people who study this predict India to pass China in population. Obviously nobody can predict the exact date or population when that will happen, but sometime in the next three decades we should have a new most populous country in the world.