State size comparison
Illinois is about 1.6 times bigger than Indiana.
Indiana is approximately 92,895 sq km, while Illinois is approximately 143,961 sq km, making Illinois 55% larger than Indiana. Meanwhile, the population of Indiana is ~6.5 million people (6.3 million more people live in Illinois).
This to-scale comparison of Indiana vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.