Buenos Aires is about 1.4 times bigger than Minneapolis.

Minneapolis is approximately 140 sq km, while Buenos Aires is approximately 203 sq km, making Buenos Aires 45% larger than Minneapolis.
Tip: This to-scale comparison of Minneapolis vs. Buenos Aires 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.