I really want to know from other advanced dancers and professionals and teachers, when you are just too old to be considered for a company?

Probably 28-ish. But I know a girl who is 30-something and just auditioned (and got accepted) to a local contemporary ballet company.

^I would agree^ Probably anywhere up to 28 at the oldest, a lot of very talented dancers don't get started till they are in their mid teens so the need that extra bit of time to train. But if they are trained well some companies will still look at them up till around 28.

That answer is going to depend greatly on what company you're auditioning for. 28-30 would be very reasonable for many smaller dance companies, but you probably wouldn't even be allowed entrance into the auditions for larger companies...so it varies greatly.

A friend of mine auditioned for and made the Ailey company when she was 27. She left the age/birthday part of the audition information blank. After the audition (after she had already impressed them), they asked her how old she was, and she said "how old do you need me to be?" She got the job.

-Kerplooey

I think late 20's to early 30's is when you get too old. You may not necessarily be a bad dancer, but most companies wouldn't accept an older dancer and by that age your stamina can only last so long.

Also, its much easier to mold to a company when you're younger. As in, the way they run things, their classes, their teachers etc etc. So its easier for you if you're younger, too.