State size comparison

compared to

New Mexico is about 2.2 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while New Mexico is approximately 314,310 sq km, making New Mexico 118% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (10.8 million fewer people live in New Mexico).
Tip: This to-scale comparison of Illinois vs. New Mexico uses the Mercator projection, which distorts the size of regions near the poles.
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