Country size comparison

compared to

Illinois is about 11 times smaller than Mongolia.

Mongolia is approximately 1,564,116 sq km, while Illinois is approximately 143,961 sq km, making Illinois 9.2% the size of Mongolia. Meanwhile, the population of Mongolia is ~3.2 million people (9.6 million more people live in Illinois).
Tip: This to-scale comparison of Mongolia vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Illinois vs. Mongolia

Flip Comparison · See true size
See Illinois on top of Mongolia
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Quality of Life Comparison · 4 statistics
Be 2.4 times more likely to live below the poverty line in Mongolia
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Cost of Living Comparison · 7 categories - 2026 data
Mongolia is 42.5% cheaper than Illinois
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Moving from Illinois to Mongolia · Cost, visas & climate
Compare cost of living, salary and climate.
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