Oklahoma is about 1.3 times bigger than Wisconsin.

Wisconsin is approximately 140,663 sq km, while Oklahoma is approximately 177,847 sq km, making Oklahoma 26% larger than Wisconsin. Meanwhile, the population of Wisconsin is ~5.7 million people (1.9 million fewer people live in Oklahoma).
This to-scale comparison of Wisconsin vs. Oklahoma uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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