Bellevue is about 1.4 times smaller than Boston.

Boston is approximately 124 sq km, while Bellevue is approximately 87 sq km, making Bellevue 69.9% the size of Boston.
Tip: This to-scale comparison of Boston vs. Bellevue 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.