City size comparison

compared to

Chicago is about 2.7 times smaller than London.

London (including the 32 boroughs of greater London) is approximately 1,572 sq km, while Chicago is approximately 590 sq km, making Chicago 37.52% the size of London.
Tip: This to-scale comparison of London vs. Chicago uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Chicago vs. London
Flip Comparison · See true size
See Chicago on top of London
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Cost of Living Comparison · 7 categories - 2026 data
London is 22.5% more expensive than Chicago
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