I think someone said that for men the average height is five-ten (don't know what that is in centmeters; sorry). Scott is about five-two. His growth was apparently stunted by a serious illness he had as a child. He's small even for a skater.
The thing about the U.S. is that because we have such a diverse, multi-ethnic population, there are many people well below the average height as well as many people well above it. I think that in some more homogeneous countries, the extremes might be closer to the average because the genetic pool is less varied. So in communities with, for instance, a lot of east Asians or people from the Andes, the average height would be less. In areas with a lot of people from northern Europe, maybe the average would be greater.