Western Sahara is about 1.2 times bigger than Utah.

Utah is approximately 212,751 sq km, while Western Sahara is approximately 266,000 sq km, making Western Sahara 25% larger than Utah. Meanwhile, the population of Utah is ~3.5 million people (2.9 million fewer people live in Western Sahara).
Tip: This to-scale comparison of Utah vs. Western Sahara uses the Mercator projection, which distorts the size of regions near the poles.
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