Dayton is around the same size as Pittsburgh.

Pittsburgh is approximately 143 sq km, while Dayton is approximately 145 sq km, making Dayton 1% larger than Pittsburgh.
Tip: This to-scale comparison of Pittsburgh vs. Dayton 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.