Jamaica is about 28 times smaller than Oman.

Oman is approximately 309,500 sq km, while Jamaica is approximately 10,991 sq km, making Jamaica 3.55% the size of Oman. Meanwhile, the population of Oman is ~5.5 million people (2.7 million fewer people live in Jamaica).
Tip: This to-scale comparison of Oman vs. Jamaica uses the Mercator projection, which distorts the size of regions near the poles.
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