Dominican Republic is about 1.8 times bigger than Haiti.

Haiti is approximately 27,750 sq km, while Dominican Republic is approximately 48,670 sq km, making Dominican Republic 75% larger than Haiti. Meanwhile, the population of Haiti is ~11.3 million people (639,937 fewer people live in Dominican Republic).
This to-scale comparison of Haiti vs. Dominican Republic uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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