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The population data for the map comes from the NASA Socioeconomic Data and Applications Center‘s gridded world population dataset, which breaks the world’s population down into tiny cells measuring about 3 miles x 3 miles. The borders shown here are my best attempt at splitting the population up evenly.
The largest of the 22 pieces has an area of nearly 7 million square miles, about twice the size of the U.S. At the other extreme, the smallest region measures only 125,000 square miles, about the size of New Mexico.
