Arkansas is about 1.6 times smaller than Kansas.

Kansas is approximately 211,900 sq km, while Arkansas is approximately 134,856 sq km, making Arkansas 63.64% the size of Kansas. Meanwhile, the population of Kansas is ~3.0 million people (137,571 more people live in Arkansas).
Tip: This to-scale comparison of Kansas vs. Arkansas uses the Mercator projection, which distorts the size of regions near the poles.
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