https://en.wikipedia.org/wiki/List_of_countries_by_household... Top 10 countries by household debt

Switzerland Australia Denmark Netherlands Canada Norway Cyprus New Zealand South Korea Sweden

But you as a European can't understand how people can have so much debt. Well maybe you don't understand that Europe is not homogeneous and vary a lot. So maybe your comment is relevant for a country but it's definitely not for Europe. Saying that you're European tells us nothing since it's to diverse.