New Jersey is about 13 times smaller than Wyoming.

Wyoming is approximately 251,489 sq km, while New Jersey is approximately 19,211 sq km, making New Jersey 7.64% the size of Wyoming. Meanwhile, the population of Wyoming is ~588,753 people (9.0 million more people live in New Jersey).
Tip: This to-scale comparison of Wyoming vs. New Jersey uses the Mercator projection, which distorts the size of regions near the poles.
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