The population of the World. Here is a list of the world population ranked from the biggest country to the smallest as of 2009. With the upcoming census, and population growth expanding as it is, it's certainly a valid time to ask, "How many people are there in the world?"
On this "World population List", China comes in first with 1.3 billion people, followed by India, and the United States. But I bet you'll never guess who's fourth!Source: World Bank