Country size comparison

compared to

Oman is about 2.1 times bigger than Illinois.

Illinois is approximately 143,961 sq km, while Oman is approximately 309,500 sq km, making Oman 115% larger than Illinois. Meanwhile, the population of Illinois is ~12.8 million people (9.1 million fewer people live in Oman).
Tip: This to-scale comparison of Illinois vs. Oman uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Oman vs. Illinois
Flip Comparison · See true size
See Oman on top of Illinois
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Quality of Life Comparison · 2 statistics
Be 3.3 times more likely to be unemployed in Illinois
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Cost of Living Comparison · 7 categories - 2026 data
Illinois is 2.5 times more expensive than Oman overall
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