Montana is about 1.2 times smaller than Sweden.

Sweden is approximately 450,295 sq km, while Montana is approximately 376,979 sq km, making Montana 83.72% the size of Sweden. Meanwhile, the population of Sweden is ~10.5 million people (9.5 million fewer people live in Montana).
Tip: This to-scale comparison of Sweden vs. Montana uses the Mercator projection, which distorts the size of regions near the poles.
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