When examining world population figures, I was surprised to see the US at third, behind only China and India. China and India both have over a billion people. The US has but 290 million by comparison. Indonesia and Brazil round out the top five, with Pakistan, Russia, Bangladesh, Nigeria and Japan making up the remainder of top ten most populous nations.
fyi…Afghanistan is 38th. Iraq is 43rd. Vietnam, again somewhat surprisingly, is 14th most populous.