State size comparison

Illinois, USA

compared to

Missouri, USA

Illinois is about 1.2 times smaller than Missouri.

Missouri is approximately 178,414 sq km, while Illinois is approximately 143,961 sq km, making Illinois 80.69% the size of Missouri. Meanwhile, the population of Missouri is ~6.0 million people (6.8 million more people live in Illinois). We have positioned the outline of Missouri near the middle of Illinois.