United Kingdom is about 1.6 times smaller than Montana.

Montana is approximately 376,979 sq km, while United Kingdom is approximately 243,610 sq km, making United Kingdom 64.62% the size of Montana. Meanwhile, the population of Montana is ~989,415 people (66.8 million more people live in United Kingdom).
This to-scale comparison of Montana vs. United Kingdom uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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