City size comparison

compared to

Chicago is about 1.3 times bigger than Oslo.

Oslo is approximately 454 sq km, while Chicago is approximately 590 sq km, making Chicago 30% larger than Oslo.
Tip: This to-scale comparison of Oslo vs. Chicago uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Chicago vs. Oslo

Flip Comparison · See true size
See Chicago on top of Oslo
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Cost of Living Comparison · 7 categories - 2026 data
Oslo is 6.8% more expensive than Chicago
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