City size comparison

compared to

Philadelphia is about 4.5 times smaller than London.

London (including the 32 boroughs of greater London) is approximately 1,572 sq km, while Philadelphia is approximately 348 sq km, making Philadelphia 22.13% the size of London.
Tip: This to-scale comparison of London vs. Philadelphia uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Philadelphia vs. London

Flip Comparison · See true size
See Philadelphia on top of London
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Cost of Living Comparison · 7 categories - 2026 data
London is 26.3% more expensive than Philadelphia
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