I just got back from a study abroad at EGADE, in Monterrey Mexico. Most of the international students in the program were about 23, with a range of 21-24. 70% were French. Most were from top programs. It seems to me that European MBA students are younger than their American counterparts. So, if you are concerned about being able to enter an American MBA program young, you may want to look abroad to places like England, France, and Spain.
However, I think there is also some value in entering the work force for a few years, first. In my experience, going into my MBA program after already having a sense for real-world business issues really solidified my learning. The bschool decision is very personal, and unique to the individual.
I wish you the best,
Tatiana
Tatiana Becker | GMAT Instructor | Veritas Prep