State size comparison

compared to

Kansas is about 1.5 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while Kansas is approximately 211,900 sq km, making Kansas 47% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (10.0 million fewer people live in Kansas).
Tip: This to-scale comparison of Illinois vs. Kansas uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Kansas vs. Illinois

Flip Comparison · See true size
See Kansas on top of Illinois
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Quality of Life Comparison · 14 statistics
Be 41.2% more likely to be unemployed in Illinois
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Cost of Living Comparison · 7 categories - 2026 data
Illinois is 18.3% more expensive than Kansas
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