Just in the town I live in, we have over 400 boys playing little league baseball, who are 12 and under.

The number must be astonishing when you add the girls, and the 13-16 year olds.

I dont know how many do now, but I am 20 years old and when I was younger I use to play all the time, I think I got tired of it after awhile though, when I was a teen I started liking volleyball more.

well i have never played it.

Well, I'm 16 and where I live, we don't have Little League, we used to have AABC baseball, but it was closed down. So now there's a city league, and a league in another town about 30 minutes away. But the city league has about 200-300 kids I'm pretty sure. It's 15u also.
But, there's nothing in the age group of 17/18u except for school baseball/softball.

12x18 is? but that is how much play in my leauge.

lots! not sure how 2 give u a number!