Costa Rica is about 2.3 times smaller than Eritrea.

Eritrea is approximately 117,600 sq km, while Costa Rica is approximately 51,100 sq km, making Costa Rica 43.45% the size of Eritrea. Meanwhile, the population of Eritrea is ~6.2 million people (1.0 million fewer people live in Costa Rica).
This to-scale comparison of Eritrea vs. Costa Rica uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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