Montenegro is about 8 times smaller than Bulgaria.

Bulgaria is approximately 110,879 sq km, while Montenegro is approximately 13,812 sq km, making Montenegro 12.46% the size of Bulgaria. Meanwhile, the population of Bulgaria is ~6.9 million people (6.3 million fewer people live in Montenegro).
This to-scale comparison of Bulgaria vs. Montenegro uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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