State size comparison

compared to

North Carolina is around the same size as Illinois.

Illinois is approximately 143,961 sq km, while North Carolina is approximately 126,161 sq km, making North Carolina 87.64% the size of Illinois. Meanwhile, the population of Illinois is ~12.8 million people (3.3 million fewer people live in North Carolina).
Tip: This to-scale comparison of Illinois vs. North Carolina uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: North Carolina vs. Illinois

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