South Bend is about 4.1 times bigger than Sydney.

Sydney is approximately 27 sq km, while South Bend (map shows its 30 named neighbourhoods; the area covers the whole city) is approximately 109 sq km, making South Bend 306% larger than Sydney.
Tip: This to-scale comparison of Sydney vs. South Bend uses the Mercator projection, which distorts the size of regions near the poles.
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