Well, they're tamagotchi fans - so many of them are children but some of them will be older - teens and also adults - in fact anyone who owns a Tama Music Star and has internet access!
Not everyone on tamatown is a kid. I know alot of people who are adults,and I myself am a teenager in highschool. Tama's are,in my opion, for all ages and as far as I know, all ages use them.