Bulgaria is about 1.3 times bigger than Azerbaijan.

Azerbaijan is approximately 86,600 sq km, while Bulgaria is approximately 110,879 sq km, making Bulgaria 28% larger than Azerbaijan. Meanwhile, the population of Azerbaijan is ~10.4 million people (3.5 million fewer people live in Bulgaria).
This to-scale comparison of Azerbaijan vs. Bulgaria uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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