City size comparison

compared to

Lyon is about 2.5 times smaller than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Lyon is approximately 48 sq km, making Lyon 39.56% the size of San Francisco.
Tip: This to-scale comparison of San Francisco vs. Lyon uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Lyon vs. San Francisco

Flip Comparison · See true size
See Lyon on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 79.3% more expensive than Lyon
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