Massachusetts is about 9 times smaller than Missouri.

Missouri is approximately 178,414 sq km, while Massachusetts is approximately 20,306 sq km, making Massachusetts 11.38% the size of Missouri. Meanwhile, the population of Missouri is ~6.0 million people (558,702 more people live in Massachusetts).
This to-scale comparison of Missouri vs. Massachusetts uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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