I need to know to what age group (or groups) Delta Goodrem appeals
most. I work for a publisher who is publishing a book about her and we
are trying to establish who is likely to buy it so that we can
determine how to package it.
Opinions (anecdotal) range from 8-13 year old girls and grandmas, to
8-28 year olds who are in love with her story of beating cancer and
trying to find love.
Any information that can help to clarify who she really does appeal to
would be useful. My inittla search has not been very fruitful.

One idea would be to go to the official Goodrem website and enter the
forum. Ask outright the ages of her fans; most will probably be
willing to share that info:

http://www.deltagoodrem.com/artists/deltagoodrem/forum/home.do

Kriswrite

hi ya,
just thought id put a lil comment her 4 u as i am a mad delta goodrem fan
im 16, most of my m8s really like her 2, i realy like her music and i
think she is an amazin person for beatin her cancer n still carryin
on!
hope this helps
helenjayne xx

Obviously the assumption intimated by questioner, and commenter as
well, is that any fans are female, otherwise the question would have
been (a)gender  breakdown, and(b)age.  I too respect Delta in regards
the way she has handled her cancer but I am an older male.

 She made a big mistake with Mark Phili...  however. How naieve of her.