State size comparison

compared to

Washington is about 2.2 times smaller than Montana.

Montana is approximately 376,979 sq km, while Washington is approximately 172,348 sq km, making Washington 45.72% the size of Montana. Meanwhile, the population of Montana is ~989,415 people (5.7 million more people live in Washington).
This to-scale comparison of Montana vs. Washington uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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