Which Country has the Largest Population in the World: Themost populouscountry in the world isChinawith 1,350 million recorded in 2010, representing 20% of the total population of this planet. China’s population increases annually about 10 million people. The world’s most populous country overcame the barrier of 1,000 million in 1980 and it is expected that by the year 2043 will reach 1.550 million, a figure which growth would stagnate. And these numbers could have been much higher if family planning policies not introduced by the Chinese authorities since 1971, since according toUNestimates, before entering this type of policy it was expected that China’s total number of people will become more than1,600 million inhabitants in 2005. These planning policies stipulated that urban families (who were living in cities) could only have a child, while families that were living in rural areas could have a second child male, if the first had been a woman. This is because in the countryside, rural force of man is more necessary than that of women. However, this and the fact that man can make better economic performance than women, has led to that currently born for every 100 women 105 men, indicating the existence of a high number of female abortions. as the death rate is decreasing day by day due to best medical facilities so each year our planet has large number of new human beings. below is a list of top ten countries with most population. List of top ten countries with Largest Population in the World Rank Country Population 1 China 1,306,313,800 2 India 1,080,264,400 3 U.S. 295 734 100 4 Indonesia 241 973 900 5 Brazil 186 112 800 6 Pakistan 162 419 900 7 Bangladesh 144 319 600 8 Russia 143 420 300 9 Nigeria 128 772 000 10 Japan 127 417 200 Q:Which country has the largest population in the world? The most populous country in the world is China with 1,350 million recorded in 2010, representing 20% of the total world population. China’s population increases annually about 10 million people.