Colorado is about 1.9 times bigger than Iowa.

Iowa is approximately 144,701 sq km, while Colorado is approximately 268,627 sq km, making Colorado 86% larger than Iowa. Meanwhile, the population of Iowa is ~3.0 million people (2.0 million more people live in Colorado).
This to-scale comparison of Iowa vs. Colorado uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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