Springfield is about 2.6 times smaller than Seattle.

Seattle is approximately 217 sq km, while Springfield is approximately 83 sq km, making Springfield 37.99% the size of Seattle.
Tip: This to-scale comparison of Seattle vs. Springfield 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.