Iowa is about 2.1 times smaller than Oman.

Oman is approximately 309,500 sq km, while Iowa is approximately 144,701 sq km, making Iowa 46.75% the size of Oman. Meanwhile, the population of Oman is ~3.8 million people (717,993 fewer people live in Iowa).
This to-scale comparison of Oman vs. Iowa uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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