Country size comparison

compared to

Japan is about 1.4 times bigger than Colorado.

Colorado is approximately 268,627 sq km, while Japan is approximately 377,915 sq km, making Japan 41% larger than Colorado. Meanwhile, the population of Colorado is ~5.0 million people (119.2 million more people live in Japan).
Tip: This to-scale comparison of Colorado vs. Japan uses the Mercator projection, which distorts the size of regions near the poles.
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Colorado is 2.1 times more expensive than Japan overall
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