User blog comment:Blinkn/How old are they?/@comment-4047476-20120612210844

I think the main estimate is between ten and fifteen years have passed since the first issue of the Fantastic Four. If Spider-Man was fifteen, I'd say he's in his late twenties to about 30 now.

The X-Men, I think were mainly about 16-18, excluding Bobby Drake who may have been 14-16 and Hank McCoy, who was maybe 18-20 as he was already in college (I think...?); meaning the original team would be ~early thirties. The second X-Men team (most of who were twenties, excluding Banshee (30s? so now mid forties and Wolverine [Somewhere around 140?] in Giant-Sized X-Men.)

Stature, I think was about five(?) when she first appears, so she's probably closer to 16-17 now, the age of most of the Young X-Men and Avengers by the looks of things. Maybe Speed, Wiccan and Hulkling are a little older...

In my head, I equate Franklin to about 11-13 and Valeria's about 6 (what with being born twice or something). The New Warriors and New Mutants (+Shadowcat) are probably early twenties. You can work out that Cap (Who was twenty-four/five when he was frozen) is probably somewhere in his mid-thirties, early forties (physically at least) and I think Tony Stark is probably about the same age.

And congratulations if you got to the end of this post. I just read it over and it looks like I'm gabbling on. I'd be interested in knowing how old others imagine characters to be.