Bulgaria is about 1.6 times smaller than Oklahoma.

Oklahoma is approximately 177,847 sq km, while Bulgaria is approximately 110,879 sq km, making Bulgaria 62.35% the size of Oklahoma. Meanwhile, the population of Oklahoma is ~3.8 million people (3.1 million more people live in Bulgaria).
This to-scale comparison of Oklahoma vs. Bulgaria uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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