Seattle is about 2 times bigger than South Bend.

South Bend (map shows its 30 named neighbourhoods; the area covers the whole city) is approximately 109 sq km, while Seattle is approximately 217 sq km, making Seattle 100% larger than South Bend.
Tip: This to-scale comparison of South Bend vs. Seattle 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.