I found this map of the world’s GDP Density via an Econbrowser post referencing an 1999 paper by John Gallup, Jeffrey Sachs and Andrew Mellinger.
GDP Density = GDP per capita * Number of people per square kilometer.
The darker the colors, the higher the GDP density.
{Click on the image to take a closer look}
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[tags]population, income, World, GDP Density[/tags]
Visualizing Economics was started in 2006 by 