Columbus is around the same size as Seoul.

Seoul is approximately 605 sq km, while Columbus is approximately 574 sq km, making Columbus 94.8% the size of Seoul.
Tip: This to-scale comparison of Seoul vs. Columbus 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.