Bellingham is about 3 times smaller than Seattle.

Seattle is approximately 217 sq km, while Bellingham (map shows its 21 named neighbourhoods; the area covers the whole city) is approximately 73 sq km, making Bellingham 33.61% the size of Seattle.
Tip: This to-scale comparison of Seattle vs. Bellingham uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.