Springfield is about 7 times smaller than Chicago.

Chicago is approximately 590 sq km, while Springfield is approximately 83 sq km, making Springfield 13.99% the size of Chicago.
Tip: This to-scale comparison of Chicago 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.