New Jersey is about 20 times smaller than Japan.

Japan is approximately 377,915 sq km, while New Jersey is approximately 19,211 sq km, making New Jersey 5.08% the size of Japan. Meanwhile, the population of Japan is ~124.2 million people (115.4 million fewer people live in New Jersey).
This to-scale comparison of Japan vs. New Jersey uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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