Hey there,
How's it going? To answer your question I am 20 years old. I have read that your growth plates close around this age but I know some people who have grow in their late 20s, so it's worth a try.
Right now I am 5'9" (175cm). It's not bad, but I would like to grow some more cos my soccer coach wont pick me cos I am not tall enough. (He has this thing about everyone being at least 6' tall, like the German World cup team). If it was based on ability then I should be a first team player no problem. Last season (with the previous coach I was the teams top goalscorer, 10 goals in 7 games).
Anyway, let me ask you. How old are you, and why do you want to grow?
I am hoping to get around another 2 inches, then wear something in my boots to prop me up to 6', lol.