State size comparison
Montana, USA
compared to
Illinois, USA
Montana is about 2.6 times bigger than Illinois.
Illinois is approximately 143,961 sq km, while Montana is approximately 376,979 sq km, making Montana 162% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (11.8 million fewer people live in Montana).
We have positioned the outline of Illinois near the middle of Montana.
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This to-scale comparison of
Illinois
vs.
Montana
uses the Mercator projection, which distorts the size of regions near the poles. Learn more.
Note: Try dragging the outline to reposition.