[1] Willi Liebherr grew up in Upper Swabia's, Kirchdorf an der Iller and in Biberach.
He graduated as an engineer from the Swiss Federal Institute of Technology in Zurich[2] and lives in Nussbaumen, Switzerland.
[7][1] On the 2018 Forbes list, Isolde and Willi Liebherr ranked 222nd, with approximately US$7.1 billion.
[2] In 2021, on the Bloomberg Billionaires Index, the net worth of Willi Liebherr was stated to be approximately US$9.43 billion, making him one of the richest people in Switzerland and Germany and 263rd on the list of the richest people in the world.
[11] In 2023, the Liebherr family's assets were estimated at 9.3 billion by Bilanz, placing them 19th on a list of the 300 richest people in Switzerland.