I?d like to find demographic information about US people who are young
and affluent.  The answer to this question would be at least two fold:

On one hand, I?d like to know the income distributions for certain age
groups, e.g., X% of thirty year olds earn $Y or more, all the way from
ages 18 to 35.  For that inquiry, I don?t necessarily need the income
statistics for every-and-every age between 18 and 35, but I would like
it to be as specific as practicable, same goes for the income levels. 
I?d also like to know raw numbers as well as percentages, e.g., 2.5
million people between the ages of 25 and 35 earn at least $200K a
year.

Secondly, I?d like to also take into account those who are young and
affluent but don?t necessarily earn all the money themselves, i.e.,
those who inherit wealth.  I?d imagine this inquiry will be a little
messier, because you never really know how much money from rich
parents turns into disposable income for kids; nonetheless, I?d like
information about rich couples, their kids, their giving habits,
?parental welfare,? etc. insofar as it can be used to get an idea of
demographics of affluent youth who are affluent via inheritance or
parental support.

As mentioned, I?m only concerned with ages 18-35.  Regarding income
levels, I?m concerned with $80K per year and above.