New Mexico is about 2.2 times bigger than Wisconsin.

Wisconsin is approximately 140,663 sq km, while New Mexico is approximately 314,310 sq km, making New Mexico 123% larger than Wisconsin. Meanwhile, the population of Wisconsin is ~5.7 million people (3.6 million fewer people live in New Mexico).
Tip: This to-scale comparison of Wisconsin vs. New Mexico uses the Mercator projection, which distorts the size of regions near the poles.
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