State size comparison

compared to

North Dakota is about 1.2 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while North Dakota is approximately 178,647 sq km, making North Dakota 24% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (12.2 million fewer people live in North Dakota).
Tip: This to-scale comparison of Illinois vs. North Dakota uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: North Dakota vs. Illinois

Flip Comparison · See true size
See North Dakota on top of Illinois
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Quality of Life Comparison · 14 statistics
Be 92.0% more likely to be unemployed in Illinois
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Cost of Living Comparison · 7 categories - 2026 data
Illinois is 7.7% more expensive than North Dakota
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