Country size comparison

compared to

Mongolia is about 11 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while Mongolia is approximately 1,564,116 sq km, making Mongolia 986% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (9.6 million fewer people live in Mongolia).
Tip: This to-scale comparison of Illinois vs. Mongolia uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Mongolia vs. Illinois

Flip Comparison · See true size
See Mongolia on top of Illinois
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Quality of Life Comparison · 4 statistics
Make 4.3 times more money in Illinois
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Cost of Living Comparison · 7 categories - 2026 data
Illinois is 3.1 times more expensive than Mongolia overall
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Moving from Mongolia to Illinois · Cost, visas & climate
Compare cost of living, salary and climate.
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