City size comparison

compared to

Key West is about 9 times smaller than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Key West (area of Key West island) is approximately 14 sq km, making Key West 11.24% the size of San Francisco.
Tip: This to-scale comparison of San Francisco vs. Key West uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Key West vs. San Francisco

Flip Comparison · See true size
See Key West on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 44.8% more expensive than Key West
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