Montana is about 1.2 times bigger than Norway.

Norway is approximately 323,802 sq km, while Montana is approximately 376,979 sq km, making Montana 16% larger than Norway. Meanwhile, the population of Norway is ~5.6 million people (4.6 million fewer people live in Montana).
Tip: This to-scale comparison of Norway vs. Montana uses the Mercator projection, which distorts the size of regions near the poles.
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