Detroit is about 697 times smaller than Michigan.

Michigan is approximately 250,493 sq km, while Detroit is approximately 359 sq km, making Detroit 0.14% the size of Michigan.
Tip: This to-scale comparison of Michigan vs. Detroit 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.