Is Hermione Older or Younger than Harry?

[Berit Jakobsen]

No: HPFGUIDX 92646

"snapesmate" wrote:
Yes, JKR actually stated Hermione was 10 when she started at 
Hogwarts during an interview.

Berit replies:

I just read a thread on this subject on another forum ("the boy who 
live forum"), and especially one post caught my eye (thanks Hugh 
Lapham). This is the gist of his thoughts:

Fred and George complain about not being able to enter the tournament 
in GoF, but they are only a bit off from turning seventeen. This 
means that they would not have been eleven when they started their 
first year at Hogwarts if you do the math. It means they are sixteen 
at the start of their sixth year and thus were only ten when starting 
year one.

In other words; Hermione could also have started as a ten year old! 
If Fred and George did, it's maybe not so uncommon.

Berit
http://home.no.net/berjakob/snape.html