Colorado is about 2.4 times bigger than Bulgaria.

Bulgaria is approximately 110,879 sq km, while Colorado is approximately 268,627 sq km, making Colorado 142% larger than Bulgaria. Meanwhile, the population of Bulgaria is ~6.9 million people (1.8 million fewer people live in Colorado).
This to-scale comparison of Bulgaria vs. Colorado uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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