Illinois is about 1.7 times bigger than Austria.

Austria is approximately 83,871 sq km, while Illinois is approximately 143,961 sq km, making Illinois 72% larger than Austria. Meanwhile, the population of Austria is ~8.9 million people (3.9 million more people live in Illinois).
This to-scale comparison of Austria vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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