City size comparison

compared to

Buenos Aires is about 1.7 times bigger than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Buenos Aires is approximately 203 sq km, making Buenos Aires 68% larger than San Francisco.
Tip: This to-scale comparison of San Francisco vs. Buenos Aires uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Buenos Aires vs. San Francisco

Flip Comparison · See true size
See Buenos Aires on top of San Francisco
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Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 2.3 times more expensive than Buenos Aires
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