Guinea is about 1.7 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while Guinea is approximately 245,857 sq km, making Guinea 71% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (407,200 more people live in Guinea).
This to-scale comparison of Illinois vs. Guinea uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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