Econintersect: The National Geographic has an interactive display article that shows how seven billion people are spread around the world. The map (shown after the continuation break) shows population density; the brightest points are the highest densities. Each country is colored according to its average annual gross national income per capita, using categories established by the World Bank (see key below). Some nations— like economic powerhouses China and India—have an especially wide range of incomes. But as the two most populous countries, both are lower middle class when income is averaged per capita. Click here for an interactive version of the map.
The buttons in the upper right corner of the images lead to a wealth of population demographic data regarding health, life styles, technology usage, education and more.
Source: The National Geographic Society
