Massachusetts is about 13 times smaller than Colorado.

Colorado is approximately 268,627 sq km, while Massachusetts is approximately 20,306 sq km, making Massachusetts 7.56% the size of Colorado. Meanwhile, the population of Colorado is ~5.0 million people (1.5 million more people live in Massachusetts).
This to-scale comparison of Colorado vs. Massachusetts uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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