According to the UN, India (1,428.6 million) is world's most populated country, followed by China (1,425.7 million), the United States (340 million), Indonesia (277.5 million) and Pakistan (240.5 million). Nigeria is 6th most populous country in the world with population of 223.8 million. Brazil (216.4 million) is 7th on the list, followed by Bangladesh (173 million) and Russia (144.4 million).