Illinois is about 3.1 times smaller than Sweden.

Sweden is approximately 450,295 sq km, while Illinois is approximately 143,961 sq km, making Illinois 31.97% the size of Sweden. Meanwhile, the population of Sweden is ~10.5 million people (2.3 million more people live in Illinois).
This to-scale comparison of Sweden vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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