New Jersey is about 2.5 times smaller than Slovakia.

Slovakia is approximately 49,035 sq km, while New Jersey is approximately 19,211 sq km, making New Jersey 39.18% the size of Slovakia. Meanwhile, the population of Slovakia is ~5.4 million people (3.4 million more people live in New Jersey).
This to-scale comparison of Slovakia vs. New Jersey uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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