Christmas Island is about 821 times smaller than Bulgaria.

Bulgaria is approximately 110,879 sq km, while Christmas Island is approximately 135 sq km, making Christmas Island 0.12% the size of Bulgaria. Meanwhile, the population of Bulgaria is ~6.9 million people (6.9 million fewer people live in Christmas Island).
This to-scale comparison of Bulgaria vs. Christmas Island uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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