57% said that they have visited a former KZ or memorial, 43% have not.
That 43% is a number that should go down with every year. I don't know anybody my age who hasn't visited a KZ at 9th/10th grade.
I never did for example, nor did any other of our classes (which is kind of sad and weird, because my school was a socially left-leaning one and we did all other kinds of projects like driving to Rome for a week, driving to Germany for a project and so on). Even stranger considering that the next KZ is only 100 miles away in Mauthausen and few side camps of these KZs are just a few miles away from here ...
That's because you're Austrian.
Note on the poll: both the "what's Auschwitz" and the "and where is it" question had no answer options supplied, and counted only whether the polled person clearly was positive about the correct answer, or wasn't. So this isn't exactly likely to exaggerate the number of people who know the answer.