City size comparison

compared to

Montreal is about 2.4 times bigger than Porirua.

Porirua is approximately 182 sq km, while Montreal is approximately 432 sq km, making Montreal 137% larger than Porirua.
Tip: This to-scale comparison of Porirua vs. Montreal uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Montreal vs. Porirua

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