State size comparison

compared to

Illinois is about 92 times bigger than London.

London (including the 32 boroughs of greater London) is approximately 1,572 sq km, while Illinois is approximately 143,961 sq km, making Illinois 9,058% larger than London.
Tip: This to-scale comparison of London vs. Illinois uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Illinois vs. London
Flip Comparison · See true size
See Illinois on top of London
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Cost of Living Comparison · 7 categories - 2026 data
London is 48.7% more expensive than Illinois
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