State size comparison
compared to
Illinois is about 7 times bigger than New Jersey.
New Jersey is approximately 19,211 sq km, while Illinois is approximately 143,961 sq km, making Illinois 649% larger than New Jersey. Meanwhile, the population of New Jersey is ~8.8 million people (4.0 million more people live in Illinois).
Tip:
This to-scale comparison of
New Jersey
vs.
Illinois
uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Illinois vs. New Jersey
Flip Comparison · See true size
See Illinois on top of New Jersey
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Quality of Life Comparison · 14 statistics
Be 18.4% less likely to live below the poverty line in New Jersey
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Cost of Living Comparison · 7 categories - 2026 data
New Jersey is 19.6% more expensive than Illinois
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Moving from Illinois to New Jersey · Cost, visas & climate
Compare cost of living, salary and climate.
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