Illinois is about 7 times smaller than Mauritania.

Mauritania is approximately 1,030,700 sq km, while Illinois is approximately 143,961 sq km, making Illinois 13.97% the size of Mauritania. Meanwhile, the population of Mauritania is ~4.2 million people (8.7 million more people live in Illinois).
This to-scale comparison of Mauritania vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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