City size comparison

compared to

Boston is around the same size as Ulm.

Ulm (map shows its 55 named neighbourhoods; the area covers the whole city) is approximately 119 sq km, while Boston is approximately 124 sq km, making Boston 4% larger than Ulm.
Tip: This to-scale comparison of Ulm vs. Boston uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Boston vs. Ulm

Flip Comparison · See true size
See Boston on top of Ulm
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Cost of Living Comparison · 7 categories - 2026 data
Ulm is 10.0% cheaper than Boston
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