Senegal is about 1.4 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while Senegal is approximately 196,722 sq km, making Senegal 37% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (5.1 million more people live in Senegal).
This to-scale comparison of Illinois vs. Senegal uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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