60 is the new 50 though....
Obama and Clinton skewed things.
Post WWII, here are the ages of Presidents at the start of their term.
62, 43, 55, 56, 61, 52, 69, 64, 46, 54, 47, 70, 78.
and to me, Nixon and Bush 43 were "old"... meaning they were culturally older than they were. Someone said in 1960 election said Nixon was an old person's view of what young people should be.