Pittsburgh is around the same size as Dayton.

Dayton is approximately 145 sq km, while Pittsburgh is approximately 143 sq km, making Pittsburgh 99.21% the size of Dayton.
Tip: This to-scale comparison of Dayton vs. Pittsburgh 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.