I'm 20. Will be 20 when the Fall 2015 semester starts. For a while my age made me feel a little bit nervous about applying, especially when I saw things like 26 years old being the average age of admitted students. Age is nothing but a number, though. Even though I'm definitely lacking experience in some aspects, I've also got a lot of transferrable skills in research and language. I've also got the benefit of still being in "school mode" since I'm not taking a gap year after undergrad.