I've only watched a couple episodes so far (maybe about halfway through season 1), and I'm not sure if I just completely missed something obvious, but I have no idea where the show is set. One of the characters attends the University of Minnesota (which has several campuses throughout the state), but the other characters usually talk to her via phone or internet video-chat, which suggests some distance from the rest of the action.
I've checked a few different places to try to figure it out (BBC website, Wikipedia, and IMDB), but I've only watched a few episodes, and these sources start to become spoilers before they reveal the location.
So, where does Orphan Black take place?