it depends on the person you could keep growing or stop growing it depends on your genes
Girls generally undergo a growth spurt at about 12 or 13 years of age and often do not grow much more in height after. This is sometimes embarassing for the girl because she now towers over most of the boys who will have their growth spurt a couple of years later. Don't worry, though, the boys are having their problems too, with changing voices and other things they don't want to talk about.
In any case, as stated above, there is no way to know how tall a particular person will be, but most girls do not grow much past 5'10" and most boys do not grow much past 6'2". If you do grow taller than that, be happy, many girls in their twenties would give anything to be tall!