Durham is about 3.5 times bigger than Bellevue.

Bellevue is approximately 87 sq km, while Durham (map shows its 228 named neighbourhoods; the area covers the whole city) is approximately 308 sq km, making Durham 255% larger than Bellevue.
Tip: This to-scale comparison of Bellevue vs. Durham uses the Mercator projection, which distorts the size of regions near the poles.
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