Oklahoma is about 13 times bigger than Montenegro.

Montenegro is approximately 13,812 sq km, while Oklahoma is approximately 177,847 sq km, making Oklahoma 1,188% larger than Montenegro. Meanwhile, the population of Montenegro is ~604,966 people (3.1 million more people live in Oklahoma).
This to-scale comparison of Montenegro vs. Oklahoma uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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