Milwaukee is about 1.7 times smaller than Montreal.

Montreal is approximately 432 sq km, while Milwaukee is approximately 249 sq km, making Milwaukee 57.73% the size of Montreal.
Tip: This to-scale comparison of Montreal vs. Milwaukee 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.