State size comparison

compared to

Utah is about 1.5 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while Utah is approximately 212,751 sq km, making Utah 48% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (10.1 million fewer people live in Utah).
This to-scale comparison of Illinois vs. Utah uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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