No singles in Donlon. Odds are you'll be in Dickson if you chose a single because that has the highest concentration of them (I THINK). I chose a single too! No worries, that's why we chose a mid-size school, lots of people to befriend!
Donlon does have singles (I should know; I'm in one), just not very many. At all.
A big negative about Donlon singles is that more or less everyone around you has a double, but a nice positive is that they're really, really big, compared to the singles in other freshman dorms (except Balch).