I'm under 30 and have been quilting for a few years.
I was interested in learning to crochet when I was about 6 or 7. My best friend's mom tried showing me how, but my best friend just wanted me to come and play! LOL! I've sewn since I was probably 6.
There was another thread about age on this board a long time ago...
My SIL (Live2teach) is also on this board and she is younger than I am.