Montana is about 2.9 times bigger than Alabama.

Alabama is approximately 131,426 sq km, while Montana is approximately 376,979 sq km, making Montana 187% larger than Alabama. Meanwhile, the population of Alabama is ~5.2 million people (4.0 million fewer people live in Montana).
Tip: This to-scale comparison of Alabama vs. Montana uses the Mercator projection, which distorts the size of regions near the poles.
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