Yes, humans are by far more numerous than anyone else here - though you'll find a great many of them aren't exactly ordinary humans. Vampires, werewolves, mutants, witches, wizards, mages...we've all sorts of interesting folk here. The majority of them are good people, though some of them are also complete arses. I'm glad to see you don't seem the sort to judge by race, though. That's definitely a good thing here.
Are you from one of the space places? Tali loves to talk about space and ships when she comes in the tavern.