1? Maybe 2? I'm pretty sure there's only 1 there and I don't think it's that big. I'd also assume there are only a couple undergrads split between Duke and UNC and the majority of the ward members are in grad school.
For me, that is reason enough to go to BYU. I'm living in Houston for medical school and I feel for the kids here in undergrad when the ward's average age is likely 27-28.