City size comparison

compared to

Saint Louis is about 3.7 times smaller than Chicago.

Chicago is approximately 590 sq km, while Saint Louis is approximately 160 sq km, making Saint Louis 27.1% the size of Chicago.
Tip: This to-scale comparison of Chicago vs. Saint Louis uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Saint Louis vs. Chicago

Flip Comparison · See true size
See Saint Louis on top of Chicago
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Cost of Living Comparison · 7 categories - 2026 data
Chicago is 28.7% more expensive than Saint Louis
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