Illinois is about 1,241 times bigger than Jersey.

Jersey is approximately 116 sq km, while Illinois is approximately 143,961 sq km, making Illinois 124,004% larger than Jersey. Meanwhile, the population of Jersey is ~102,146 people (12.7 million more people live in Illinois).
This to-scale comparison of Jersey vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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