State size comparison
Illinois is about 1.5 times smaller than Utah.
Utah is approximately 212,751 sq km, while Illinois is approximately 143,961 sq km, making Illinois 67.67% the size of Utah. Meanwhile, the population of Utah is ~2.8 million people (10.1 million more people live in Illinois).
This to-scale comparison of Utah vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.