State size comparison
compared to
Illinois is about 1.2 times bigger than Pennsylvania.
Pennsylvania is approximately 116,075 sq km, while Illinois is approximately 143,961 sq km, making Illinois 24% larger than Pennsylvania. Meanwhile, the population of Pennsylvania is ~12.7 million people (128,253 more people live in Illinois).
Tip:
This to-scale comparison of
Pennsylvania
vs.
Illinois
uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Illinois vs. Pennsylvania
Flip Comparison · See true size
See Illinois on top of Pennsylvania
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Quality of Life Comparison · 9 statistics
Be 22.9% less likely to be unemployed in Pennsylvania
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Cost of Living Comparison · 7 categories - 2026 data
Pennsylvania is 0.5% more expensive than Illinois
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Moving from Illinois to Pennsylvania · Cost, visas & climate
Compare cost of living, salary and climate.
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