Montreal is about 4.9 times bigger than Youngstown.

Youngstown is approximately 88 sq km, while Montreal is approximately 432 sq km, making Montreal 391% larger than Youngstown.
Tip: This to-scale comparison of Youngstown vs. Montreal 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.