City size comparison

compared to

San Francisco is about 9 times bigger than Key West.

Key West (area of Key West island) is approximately 14 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 790% larger than Key West.
Tip: This to-scale comparison of Key West 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. Key West

Flip Comparison · See true size
See San Francisco on top of Key West
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Cost of Living Comparison · 7 categories - 2026 data
Key West is 20.2% cheaper than San Francisco
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