Boston is about 32 times smaller than Melbourne.

Melbourne (the 27 councils of metropolitan Melbourne, without the Yarra Ranges, Cardinia, Mornington Peninsula and Nillumbik) is approximately 3,915 sq km, while Boston is approximately 124 sq km, making Boston 3.17% the size of Melbourne.
Tip: This to-scale comparison of Melbourne vs. Boston uses the Mercator projection, which distorts the size of regions near the poles.
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