Washington is about 4.1 times bigger than Gisborne.

Gisborne (map shows its 10 named neighbourhoods; the area covers the whole city) is approximately 38 sq km, while Washington is approximately 158 sq km, making Washington 312% larger than Gisborne.
Tip: This to-scale comparison of Gisborne vs. Washington uses the Mercator projection, which distorts the size of regions near the poles.
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