Montana is about 2.6 times bigger than Iowa.

Iowa is approximately 144,701 sq km, while Montana is approximately 376,979 sq km, making Montana 161% larger than Iowa. Meanwhile, the population of Iowa is ~3.0 million people (2.1 million fewer people live in Montana).
This to-scale comparison of Iowa vs. Montana uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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