Bulgaria is about 1.2 times smaller than Greece.

Greece is approximately 131,957 sq km, while Bulgaria is approximately 110,879 sq km, making Bulgaria 84.03% the size of Greece. Meanwhile, the population of Greece is ~10.5 million people (3.7 million fewer people live in Bulgaria).
This to-scale comparison of Greece vs. Bulgaria uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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