I remember there were polls about it, but I cannot find them.
This one user is convinced the users here are literally below the age of highschool. I'm 25 myself and remember seeing people above the age of my parents posting, so I wonder if there's information on the ~population across ages.
I'm 20. For a good year and some following I was pretty much the baby of the site since I was rather open about being in high school when I was 17 and power-posting
the site tagline "YOU SHOULD NOT MODERATE A SITE UNTIL YOU CAN BUY YOUR OWN BOOZE AND WEED AND DROWN YOURSELF IN THEM" was directly about me, btw
Ay same age I was posting on r/cth when I was like 15 lmao
16 in my case