Vienna is about 1.4 times smaller than Columbus.

Columbus is approximately 574 sq km, while Vienna is approximately 415 sq km, making Vienna 72.29% the size of Columbus.
Tip: This to-scale comparison of Columbus vs. Vienna 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.