State size comparison

compared to

Idaho is about 1.2 times smaller than Colorado.

Colorado is approximately 268,627 sq km, while Idaho is approximately 214,314 sq km, making Idaho 79.78% the size of Colorado. Meanwhile, the population of Colorado is ~5.0 million people (3.5 million fewer people live in Idaho).
Tip: This to-scale comparison of Colorado vs. Idaho uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Idaho vs. Colorado
Flip Comparison · See true size
See Idaho on top of Colorado
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Cost of Living Comparison · 7 categories - 2026 data
Colorado is 16.9% more expensive than Idaho
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