City size comparison

compared to

San Francisco is about 2.5 times bigger than Lyon.

Lyon is approximately 48 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 153% larger than Lyon.
Tip: This to-scale comparison of Lyon vs. San Francisco uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: San Francisco vs. Lyon

Flip Comparison · See true size
See San Francisco on top of Lyon
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Cost of Living Comparison · 7 categories - 2026 data
Lyon is 22.0% cheaper than San Francisco
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