State size comparison
Wisconsin is around the same size as Illinois.
Illinois is approximately 143,961 sq km, while Wisconsin is approximately 140,663 sq km, making Wisconsin 97.71% the size of Illinois. Meanwhile, the population of Illinois is ~12.8 million people (7.1 million fewer people live in Wisconsin).
This to-scale comparison of Illinois vs. Wisconsin uses the Mercator projection, which distorts the size of regions near the poles. Learn more. Note: Try dragging the outline to reposition.