State size comparison
compared to
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).
Compare further: Wisconsin vs. Illinois
Flip Comparison · See true size
See Wisconsin on top of Illinois
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Quality of Life Comparison · 14 statistics
Be 60.0% more likely to be unemployed in Illinois
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Cost of Living Comparison · 7 categories - 2026 data
Illinois is 3.2% more expensive than Wisconsin
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City Size Comparison · See true size
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