State size comparison
Illinois is about 1.7 times smaller than Michigan.
Michigan is approximately 250,493 sq km, while Illinois is approximately 143,961 sq km, making Illinois 57.47% the size of Michigan. Meanwhile, the population of Michigan is ~9.9 million people (2.9 million more people live in Illinois).
This to-scale comparison of Michigan vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.