Uruguay is around the same size as Oklahoma.

Oklahoma is approximately 177,847 sq km, while Uruguay is approximately 176,215 sq km, making Uruguay 99.08% the size of Oklahoma. Meanwhile, the population of Oklahoma is ~4.1 million people (738,600 fewer people live in Uruguay).
Tip: This to-scale comparison of Oklahoma vs. Uruguay uses the Mercator projection, which distorts the size of regions near the poles.
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