Sweden is about 1.2 times bigger than Montana.

Montana is approximately 376,979 sq km, while Sweden is approximately 450,295 sq km, making Sweden 19% larger than Montana. Meanwhile, the population of Montana is ~989,415 people (9.5 million more people live in Sweden).
Tip: This to-scale comparison of Montana vs. Sweden uses the Mercator projection, which distorts the size of regions near the poles.
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