New Jersey is about 54 times smaller than Mauritania.

Mauritania is approximately 1,030,700 sq km, while New Jersey is approximately 19,211 sq km, making New Jersey 1.86% the size of Mauritania. Meanwhile, the population of Mauritania is ~4.2 million people (4.6 million more people live in New Jersey).
This to-scale comparison of Mauritania vs. New Jersey uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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