Country size comparison
compared to
South Korea is about 1.4 times smaller than Illinois.
Illinois is approximately 143,961 sq km, while South Korea is approximately 99,720 sq km, making South Korea 69.27% the size of Illinois. Meanwhile, the population of Illinois is ~12.8 million people (39.0 million more people live in South Korea).
Tip:
This to-scale comparison of
Illinois
vs.
South Korea
uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: South Korea vs. Illinois
Flip Comparison · See true size
See South Korea on top of Illinois
→
Quality of Life Comparison · 3 statistics
Be 81.8% more likely to be unemployed in Illinois
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Cost of Living Comparison · 7 categories - 2026 data
Illinois is 78.8% more expensive than South Korea overall
→
Moving from South Korea to Illinois · Cost, visas & climate
Compare cost of living, salary and climate.
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