Barcelona is about 1.4 times smaller than Minneapolis.

Minneapolis is approximately 140 sq km, while Barcelona is approximately 101 sq km, making Barcelona 72.43% the size of Minneapolis.
Tip: This to-scale comparison of Minneapolis vs. Barcelona 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.